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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

|X| QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2003

|_| TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

Commission File Number: 0-220-20

CASTELLE
(Exact name of Registrant as specified in its charter)

California 77-0164056
(State or other jurisdiction of (IRS Employer Identification No.)
incorporation or organization)

855 Jarvis Drive, Suite 100, Morgan Hill, California 95037
(Address of principal executive offices, including zip code)

(408) 852-8000
(Registrant's telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the Registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days. Yes |X| No __

The number of shares of Common Stock outstanding as of August 4, 2003 was
3,269,395.

Indicate by check mark whether the registrant is an accelerated filer
(as defined in Rule 12b-2 of the Exchange Act). Yes __ No |X|







CASTELLE
FORM 10-Q
TABLE OF CONTENTS



PART I. FINANCIAL INFORMATION PAGE

Item 1. Unaudited Condensed Consolidated Financial Statements:

Unaudited Condensed Consolidated Balance Sheets 2

Unaudited Condensed Consolidated Statements of Operations 3

Unaudited Condensed Consolidated Statements of Cash Flows 4

Notes to Unaudited Condensed Consolidated Financial Statements 5

SPECIAL NOTE ON FORWARD-LOOKING STATEMENTS 13

Item 2. Management's Discussion and Analysis of Financial Condition
and Results of Operations 14

Item 3Quantitative and Qualitative Disclosures About Market Risk 24

Item 4Controls and Procedures 24


PART II. OTHER INFORMATION

Item 1. Legal Proceedings 25

Item 2. Changes in Securities and Use of Proceeds 25

Item 3. Defaults Upon Senior Securities 25

Item 4. Submission of Matters to a Vote of Security Holders 25

Item 5. Other Information 25

Item 6. Exhibits and Reports on Form 8-K 25

Signatures 27

Exhibit 31.1 - Certification pursuant to 18 U.S.C. Section 1350,
as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 E-1

Exhibit 31.2 - Certification pursuant to 18 U.S.C. Section 1350,
as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 E-2

Exhibit 32.1 - Certificate pursuant to 18 U.S.C. Section 1350,
as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 E-3

Exhibit 32.2 - Certificate pursuant to 18 U.S.C. Section 1350,
as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 E-4







1




PART I - FINANCIAL INFORMATION

ITEM 1. UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

CASTELLE
CONDENSED CONSOLIDATED BALANCE SHEETS
(unaudited)
(in thousands)

June 30, 2003 December 31, 2002

---------------------- --------------------

Assets:
Current assets:
Cash and cash equivalents $ 3,663 $ 3,460
Accounts receivable, net of allowance for doubtful accounts
of $31 and $70, respectively 765 444
Inventories 872 1,110
Prepaid expenses and other current assets 262 88
---------------------- --------------------
Total current assets 5,562 5,102
Property and equipment, net 415 425
Other non-current assets 108 108
---------------------- --------------------
Total assets $ 6,085 $ 5,635
====================== ====================

Liabilities and Shareholders' Equity:
Current liabilities:
Long-term debt, current portion $ 20 $ 21
Accounts payable 196 359
Accrued liabilities 2,409 2,288
---------------------- --------------------
Total current liabilities 2,625 2,668
Long term debt, net of current portion 35 44
---------------------- --------------------
Total liabilities 2,660 2,712
---------------------- --------------------

Shareholders' equity:
Common stock, no par value:
Authorized: 25,000 shares
Issued and outstanding: 3,216 and 3,187, respectively 27,069 27,038
Accumulated deficit (23,644) (24,115)
---------------------- --------------------
Total shareholders' equity 3,425 2,923
---------------------- --------------------
Total liabilities and shareholders' equity $ 6,085 $ 5,635
====================== ====================


See accompanying notes to unaudited condensed consolidated financial statements.



2





CASTELLE
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share amounts)
(unaudited)

Three months ended Six months ended
................................ ...............................
June 30, 2003 June 30, 2002 June 30, 2003 June 30, 2002
---------------- -------------- --------------- ---------------


Net sales $ 2,511 $ 2,261 $ 5,011 $ 4,629
Cost of sales 573 669 1,270 1,446
---------------- -------------- --------------- ---------------
Gross profit 1,938 1,592 3,741 3,183
---------------- -------------- --------------- ---------------

Operating expenses:
Research and development 429 349 784 762
Sales and marketing 760 780 1,495 1,543
General and administrative 509 450 966 854
Restructuring charges - (40) - (40)
---------------- -------------- --------------- ---------------
Total operating expenses 1,698 1,539 3,245 3,119
---------------- -------------- --------------- ---------------
Income from operations 240 53 496 64

Interest income, net 4 12 8 22
Other income (expense), net (14) (3) (29) 8
---------------- -------------- --------------- ---------------
Income before provision for income taxes 230 62 475 94
Provision for income taxes 2 -- 4 --
---------------- -------------- --------------- ---------------
Net income $ 228 $ 62 $ 471 $ 94
================ ============== =============== ===============




Income per share:
Net income per common share - basic $ 0.07 $ 0.01 $ 0.15 $ 0.02
Net income per common share - diluted $ 0.06 $ 0.01 $ 0.12 $ 0.02
Shares used in per share calculation - basic 3,200 4,749 3,223 4,747
Shares used in per share calculation - diluted 4,138 4,765 4,010 4,769


See accompanying notes to unaudited condensed consolidated financial statements.


3




CASTELLE
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
(unaudited)


Six months ended
......................................
June 30, 2003 June 30, 2002
----------------- ------------------

Cash flows from operating activities:
Net income $ 471 $ 94
Adjustment to reconcile net income to net cash provided
by/(used in) operating activities:
Loss on disposal of fixed assets -- 1
Depreciation and amortization 109 108
Provision for doubtful accounts and sales returns (158) 81
Provision for excess and obsolete inventory (67) (143)
Changes in assets and liabilities:
Accounts receivable (163) (50)
Inventories 305 227
Prepaid expenses and other current assets (174) 9
Accounts payable (163) (131)
Accrued liabilities 121 (427)
----------------- ------------------
Net cash provided by/(used in) operating activities 281 (231)
----------------- ------------------

Cash flows from investing activities:
Purchase of property and equipment (99) (21)
----------------- ------------------
Net cash used in investing activities (99) (21)
----------------- ------------------

Cash flows from financing activities:
Repayment of long-term debt (10) (8)
Proceeds from issuances of common stock, net of
repurchases 31 3
----------------- ------------------
Net cash provided by/(used in) financing activities 21 (5)
----------------- ------------------

Net increase/(decrease) in cash and cash equivalents 203 (257)

Cash and cash equivalents at beginning of period 3,460 4,568
----------------- ------------------
Cash and cash equivalents at end of period $ 3,663 $ 4,311
================= ==================



See accompanying notes to unaudited condensed consolidated financial statements.


4


CASTELLE
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(unaudited)

1. Basis of Presentation:

The accompanying unaudited condensed consolidated financial statements
include the accounts of Castelle and its wholly-owned subsidiary in the
United Kingdom. These financial statements have been prepared in accordance
with accounting principles generally accepted in the United States of
America. All intercompany balances and transactions have been eliminated.
In the opinion of management, all adjustments (consisting only of normal
recurring adjustments) considered necessary for a fair presentation of the
Company's financial position, results of operations and cash flows at the
dates and for the periods indicated have been included. Because all of the
disclosures required by accounting principles generally accepted in the
United States of America are not included in the accompanying condensed
consolidated financial statements and related notes, they should be read in
conjunction with the audited consolidated financial statements and related
notes included in the Company's Form 10-K for the year ended December 31,
2002. The condensed balance sheet data as of December 31, 2002 was derived
from our audited financial statements and does not include all of the
disclosures required by accounting principles generally accepted in the
United States of America. The results of operations for the periods
presented are not necessarily indicative of results that we expect for any
future period, or for the entire year.

The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the
financial statements and the reported amounts of revenues and expenses
during the reporting period. Actual results could differ from those
estimates.

The Company believes that its existing cash balances and anticipated cash
flows from operations will be sufficient to meet its anticipated capital
requirements for the next 12 months. However, a decline in future orders
and revenues might require the Company to seek additional capital to meet
its working capital needs during or beyond the next twelve months if the
Company is unable to reduce expenses to the degree necessary to avoid
incurring losses. If the Company has a need for additional capital
resources, it may be required to sell additional equity or debt securities,
secure additional lines of credit or obtain other third party financing.
The timing and amount of such capital requirements cannot be determined at
this time and will depend on a number of factors, including demand for the
Company's existing and new products, if any, and changes in technology in
the networking industry. There can be no assurance that such additional
financing will be available on satisfactory terms when needed, if at all.
Failure to raise such additional financing, if needed, may result in the
Company not being able to achieve its long-term business objectives. To the
extent that additional capital is raised through the sale of additional
equity or convertible debt securities, the issuance of such securities
would result in additional dilution to the Company's shareholders.

In addition, because the Company is dependent on a small number of
distributors for a significant portion of the sales of its products, the
loss of any of the Company's major distributors or their inability to
satisfy their payment obligations to the Company could have a significant
adverse effect on the Company's business, operating results and financial
condition. In the first six months of 2003, Ingram Micro and Tech Data, the
Company's two largest distributors, collectively represented approximately
48% of the Company's net sales.


5


In the same period of 2002, the same distributors collectively represented
approximately 52% of the Company's net sales.

2. Revenue Recognition

Castelle recognizes revenue based on the provisions of Staff
Accounting Bulletin No. 101 "Revenue Recognition in Financial
Statements" and Statement of Financial Accounting Standards ("SFAS") No.
48 "Revenue Recognition When Right of Return Exists."

Product revenue is recognized upon shipment if a signed contract or
purchase order exists, the fee is fixed and determinable, collection of the
resulting receivable is probable and product returns are reasonably
estimable. Shipment generally occurs and title and risk of loss is
transferred when the product is delivered to a common carrier.

The Company enters into agreements with some of its distributors that
permit limited stock rotation rights. These stock rotation rights allow the
distributor to return products for credit but require the purchase of
additional products of equal value. Customers who purchase products
directly from Castelle also have limited return rights, which expire 30
days from product shipment. Revenues subject to stock rotation rights are
reduced by management's estimates of anticipated exchanges. Castelle
establishes its returns allowance for distributors and direct customers
based on historic return rates.

Pursuant to the Company's agreements with distributors, the Company also
protects its distributors' exposure related to the impact of price
reductions. Price adjustments are recorded at the time price reductions are
communicated to the Company's distributors.

Revenue for transactions that include multiple elements such as hardware
and post-contract customer support is allocated to each element based on
its relative fair value and recognized for each element when the revenue
recognition criteria have been met for such element. Fair value is
generally determined based on the price charged when the element is sold
separately.

The Company recognizes revenue from support or maintenance contracts,
including extended warranty and support programs, ratably over the period
of the contract.

Castelle recognizes royalty income on the sale of LANpress products by a
Japanese distributor. Royalties are recognized when the products are sold
by the distributor to its end customer.

3. Net Income Per Share:

Basic net income per share is computed by dividing net income available to
common shareholders by the weighted average number of common shares
outstanding for that period. Diluted net income per share reflects the
potential dilution from the exercise or conversion of other securities into
common stock that were outstanding during the period. Diluted net income
per share excludes shares that are potentially dilutive if their effect is
anti-dilutive. Shares that are potentially dilutive consist of incremental
common shares issuable upon exercise of stock options.

Basic and diluted earnings per share are calculated as follows for the
second quarter and first six months of 2003 and 2002 (in thousands, except
per share amounts):

6







(in thousands, except per share amounts)
.......................................................
(Unaudited)
.......................................................
Three months ended Six months ended
............... ........... ............................
June 30, June 30, June 30, 2003 June 30, 2002
2003 2002
--------------- ----------- ----------------------------

Basic:
Weighted average common shares outstanding 3,200 4,749 3,223 4,747
=============== ============ ============= ==============
Net income $ 228 $ 62 $ 471 $ 94
=============== ============ ============= ==============
Net income per common share - basic $ 0.07 $0.01 $ 0.15 $ 0.02
=============== ============ ============= ==============

Diluted:
Weighted average common shares outstanding 3,200 4,749 3,223 4,747
Common equivalent shares from stock options 938 16 787 22
--------------- ------------ ------------- --------------
Shares used in per share calculation - diluted 4,138 4,765 4,010 4,769
=============== ============ ============= ==============
Net income $ 228 $ 62 $ 471 $ 94
=============== ============ ============= ==============
Net income per common share - diluted $ 0.06 $0.01 $ 0.12 $0.02
=============== ============ ============= ==============



The calculation of diluted shares outstanding for the three months ended
June 30, 2003 excludes 15,000 shares of common stock issuable upon exercise
of outstanding stock options, as their effect was antidilutive in the
period. The calculation of diluted shares outstanding for the six months
ended June 30, 2003, excludes 170,000 shares of common stock issuable upon
exercise of outstanding stock options, as their effect was antidilutive in
the period.

Stock-Based Compensation
The Company accounts for its stock-based compensation plans using the
intrinsic value method prescribed in Accounting Principles Board Opinion
No. 25, "Accounting for Stock Issued to Employees." Compensation cost for
stock options, if any, is measured by the excess of the quoted market price
of the Company's stock at the date of grant over the amount an employee
must pay to acquire the stock. SFAS No. 123, "Accounting for Stock-Based
Compensation," established accounting and disclosure requirements using a
fair-value based method of accounting for stock-based employee compensation
plans.

Had compensation costs been determined consistent with SFAS No. 123, the
Company's net income or loss would have been changed to the amounts
indicated below for the three and six months ended June 30 (unaudited, in
thousands, except per share data):



Three months ended Six months ended
............. ................ ............ ...............
June 30, 2003 June 30, 2002 June 30, June 30, 2002
2003
------------- ---------------- ------------ ---------------


Net Income - as reported $ 228 $ 62 $ 471 $ 94
Fair value of stock-based compensation (45) (49) (87) (94)
Net income - pro forma 183 13 384 0
Net income per share - basic - as reported $ 0.07 $ 0.01 $ 0.15 $ 0.02
Net income per share - diluted - as reported $ 0.05 $ 0.01 $ 0.12 $ 0.02
Net income per share - basic - pro forma $ 0.06 - $ 0.12 -
Net income per share - diluted - pro forma $ 0.04 - $ 0.10 -



The Company accounts for stock-based compensation arrangements with
non-employees in accordance with Emerging Issues Task Force ("EITF")
Abstract No. 96-18, Accounting for Equity Instruments That Are Issued to
Other Than Employees for Acquiring, or in Conjunction


7


with Selling, Goods or Services. Accordingly, unvested options and warrants
held by non-employees are subject to revaluation at each balance sheet date
based on the then current fair market value.

4. Inventories:

Inventories are stated at the lower of standard cost (which approximates
cost on a first-in, first-out basis) or market and net of provisions for
excess and obsolete inventory. Inventory details are as follows (unaudited,
in thousands):



June 30, 2003 December 31, 2002
----------------------- -----------------------

Raw material $ 487 $ 493
Work in process 7 179
Finished goods 378 438
----------------------- -----------------------
Total inventory $ 872 $ 1,110
======================= =======================



5. Segment Information:

The Company has determined that it operates in one segment. Revenues by
geographic area are determined by the location of the end user and are
summarized as follows (unaudited, in thousands):



(Unaudited)
...................................................
Three months ended Six months ended
......................... ........................
June 30, June 30, June 30, June 30,
2003 2002 2003 2002
------------------------- ------------------------


United States $2,020 $ 1,784 $ 4,008 $3,620
Europe 153 172 328 404
Pacific Rim 258 248 500 406
Rest of Americas, excluding United States 80 57 175 199
------------------------- ------------------------
Total Revenues $2,511 $ 2,261 $ 5,011 $4,629
========================= ========================


Customers that individually accounted for greater than 10% of net sales are
as follows (unaudited, in thousands):



...................................................................................................
Quarter Ended Six Months Ended
................................................. .................................................
June 30, 2003 June 30, 2002 June 30, 2003 June 30, 2002
Customer Amount Percentage Amount Percentage Amount Percentage Amount Percentage
-------- ------ ---------- ------ ---------- ------ ---------- ------ ----------

A $ 448 18% $ 597 26% $ 1,112 22% $ 1,303 28%
B $ 709 28% $ 530 23% $ 1,314 26% $ 1,122 24%



6. Comprehensive Income:

Comprehensive income is the change in equity from transactions and other
events and circumstances other than those resulting from investments by
owners and distributions to owners. There are no significant components of
comprehensive income excluded from net income, therefore, no separate
statement of comprehensive income has been presented.

8


7. Commitments and Contingencies:

Contingencies
From time to time, the Company is involved in various legal proceedings in
the ordinary course of business. The Company is not currently involved in
any litigation, which, in management's opinion, would have a material
adverse effect on its business, operating results, cash flows or financial
condition; however, there can be no assurance that any such proceeding will
not escalate or otherwise become material to the Company's business in the
future.

Lease Commitments
The following represents combined aggregate maturities for all the
Company's financing and commitments under operating and capital leases as
of June 30, 2003 (unaudited, in thousands):



Capital Lease Total
Operating Leases Obligations Commitments
----------------------------------------------------

Six months ending December 31, 2003 $ 130 $ 14 $ 144
Year ending December 31, 2004 270 20 290
Year ending December 31, 2005 263 18 281
Year ending December 31, 2006 - 14 14
----------------------------------------------------
Total Commitments $ 663 $ 66 $ 729
====================================================



The lease on the Company's headquarters facility has a term of 5 years,
expiring in December 2005 with one conditional three-year renewal option,
which if exercised would extend the lease to December 2008 commencing with
rent at ninety-five percent of fair market value.

The Company leases certain of its equipment under various operating and
capital leases that expire at various dates through 2006. The lease
agreements frequently include renewal, escalation clauses and purchase
provisions, and require the Company to pay taxes, insurance and maintenance
costs. As of June 30, 2003, the Company had loan and security agreements
for an aggregate value of $100,000, which are subject to interest rates of
12.5% to 12.8%.

The Company has a $3.0 million collateralized revolving line of credit with
a bank, which expires in March 2004, pursuant to which the Company may
borrow 100% against pledges of cash at the bank's prime rate. Borrowings
under this line of credit agreement are collateralized by all of the
Company's assets. As of June 30, 2003, the Company was in compliance with
the terms of the agreement and had no borrowings outstanding under the line
of credit.

Product Warranties and Guarantor Arrangements
In November 2002, the Financial Accounting Standards Board ("FASB") issued
FIN No. 45 "Guarantor's Accounting and Disclosure Requirements for
Guarantees, Including Indirect Guarantees of Indebtedness of Others, an
interpretation of FASB Statements No. 5, 57, and 107 and rescission of FASB
Interpretation No. 34 ("FIN 45"). FIN 45 requires that a guarantor
recognize, at the inception of a guarantee, a liability for the fair value
of the obligation undertaken by issuing the guarantee. FIN 45 also requires
additional disclosures to be made by a guarantor in its interim and annual
financial statements about its obligations under certain guarantees,
warranties and indemnification it has issued.

9


The Company offers warranties on certain products and records a liability
for the estimated future costs associated with warranty claims, which is
based upon historical experience and our estimate of the level of future
costs. Warranty costs are reflected in the income statement as a cost of
sales. A reconciliation of the changes in the Company's warranty liability
during the periods is as follows (in thousands):



(Unaudited)
....................................................
Three months ended Six months ended
......................... ........................
June 30, June 30, June 30, June 30,
2003 2002 2003 2002
------------------------- ------------------------


Balance at beginning of period $33 $ 22 $ 34 $22
Accruals for warranties issued during the 4 8 33 14
period
Actual warranty expense (6) (8) (36) (14)
------------------------- ------------------------

Balance at end of period $31 $ 22 $ 31 $22
========================= ========================



As permitted under California law, the Company has agreements whereby the
Company indemnifies its officers and directors for certain events or
occurrences while the officer or director is, or was, serving at the
Company's request in such capacity. The term of the indemnification period
is for the officer's or director's lifetime. The maximum potential amount
of future payments the Company could be required to make under these
indemnification agreements is unlimited; however, the Company has a
director and officer insurance policy that limits the Company's exposure
and enables the Company to recover a portion of any future amounts paid. As
a result of the Company's insurance policy coverage, the Company believes
the estimated fair value of these indemnification agreements is minimal.


The Company enters into standard indemnification agreements in the ordinary
course of business. Pursuant to these agreements, the Company indemnifies,
holds harmless, and agrees to reimburse the indemnified party for losses
suffered or incurred by the indemnified party, generally the Company's
business partners or customers, in connection with any U.S. patent, or any
copyright or other intellectual property infringement claim by any third
party with respect to the Company's products. The term of these
indemnification agreements is generally perpetual following execution of
the agreement. The maximum potential amount of future payments the Company
could be required to make under these indemnification agreements is
unlimited; however, the Company has never incurred costs to defend lawsuits
or settle claims related to these indemnification agreements.

8. Stock Buyback:

In the fourth quarter of 2002, the Company's Board of Directors authorized
the Company, from time to time, to repurchase at market prices, up to $2.25
million of its common stock for cash in open market, negotiated or block
transactions. The timing of such transactions will depend on market
conditions, other corporate strategies and will be at the discretion of the
management of the Company. No time limit was set for the completion of this
program. At the time of the approval by the Board of Directors, the Company
had approximately 4.8 million shares of common stock outstanding. During
the fourth quarter of 2002, the Company repurchased from open market and
negotiated transactions a total of approximately 1.62 million shares for
approximately $1.8 million, at an average per share price of $1.10. During
the first quarter of 2003, the Company repurchased from open market
transactions a total of


10


46,500 shares for $49,000, at an average per share price of $1.04. There
was no stock repurchased by the Company in the second quarter of 2003. The
Company intends to continue to execute its buyback program in 2003 as it
deems necessary.

9. Recent Accounting Pronouncements:

In November 2002, the EITF reached a consensus on Issue No. 00-21, "Revenue
Arrangements with Multiple Deliverables" ("EITF 00-21"). EITF 00-21
provides guidance on how to account for arrangements that involve the
delivery or performance of multiple products, services and/or rights to use
assets. The provisions of EITF 00-21 will apply to revenue arrangements
entered into in fiscal periods beginning after June 15, 2003. The Company
is currently assessing the impact of the adoption of this pronouncement on
its consolidated financial statements.

In January 2003, the FASB issued FASB Interpretation No. 46, "Consolidation
of Variable Interest Entities" ("FIN 46"). FIN 46 addresses consolidation
by business enterprises of variable interest entities. Under that
interpretation, certain entities known as Variable Interest Entities
("VIEs") must be consolidated by the primary beneficiary of the entity. The
primary beneficiary is generally defined as having the majority of the
risks and rewards arising from the VIE. For VIEs in which a significant
(but not majority) variable interest is held, certain disclosures are
required. FIN46 applies immediately to variable interest entities created
after January 31, 2003, and applies in the first year or interim period
beginning after June 15, 2003 to variable interest entities in which an
enterprise holds a variable interest that it acquired before February 1,
2003. The Company does not believe the adoption of this interpretation will
have a material impact on its consolidated results of operations, financial
position or cash flows.

In April 2003, the FASB issued SFAS No. 149, "Amendment of Statement 133 on
Derivative Instruments and Hedging Activities." SFAS No. 149 amends and
clarifies accounting for derivative instruments, including certain
derivative instruments embedded in other contracts, and for hedging
activities under SFAS No. 133. The new guidance amends SFAS No. 133 for
decisions made as part of the Derivatives Implementation Group ("DIG")
process that effectively required amendments to SFAS No. 133, and decisions
made in connection with other FASB projects dealing with financial
instruments and in connection with implementation issues raised in relation
to the application of the definition of a derivative and characteristics of
a derivative that contains financing components. In addition, it clarifies
when a derivative contains a financing component that warrants special
reporting in the statement of cash flows. SFAS No. 149 is effective for
contracts entered into or modified after June 30, 2003 and for hedging
relationships designated after June 30, 2003. The Company does not believe
the adoption of SFAS No. 149 will have a material impact on its
consolidated results of operations, financial position or cash flows.

In May 2003, the FASB issued SFAS No. 150, "Accounting for Certain
Financial Instruments with Characteristics of both Liabilities and Equity."
This Statement establishes standards for how an issuer classifies and
measures in its statement of financial position certain financial
instruments with characteristics of both liabilities and equity. It
requires that an issuer classify a financial instrument that is within its
scope as a liability (or an asset in some circumstances) because that
financial instrument embodies an obligation of the issuer. This Statement
is effective for financial instruments entered into or modified after May
31, 2003 and otherwise is effective at the beginning of the first interim
period beginning after June 15, 2003, except for mandatorily redeemable
financial instruments of nonpublic entities. For nonpublic entities,
mandatorily redeemable financial instruments are subject to the provisions
of this Statement for


11


the first period beginning after December 15, 2003. SFAS No. 150 is to be
implemented by reporting the cumulative effect of a change in accounting
principle for financial instruments created before the issuance date of the
statement and still existing at the beginning of the interim period of
adoption. The Company does not believe the adoption of SFAS No. 150 will
have a material impact on its consolidated results of operations, financial
position and cash flows.




12







SPECIAL NOTE ON FORWARD-LOOKING STATEMENTS

This document contains forward-looking statements that involve risks and
uncertainties. The Company's operating results may vary significantly from
quarter to quarter due to a variety of factors, including changes in the
Company's product and customer mix, constraints in the Company's manufacturing
and assembling operations, shortages or increases in the prices of raw materials
and components, changes in pricing policy by the Company or its competitors, a
slowdown in the growth of the networking market, seasonality, timing of
expenditures, and economic conditions in the United States, Europe and Asia.
Words such as "believes," "anticipates," "expects," "intends" and similar
expressions are intended to identify forward-looking statements, but are not the
exclusive means of identifying such statements. Unless the context otherwise
requires, references in this Form 10-Q to "we," "us," or the "Company" refer to
Castelle. Readers are cautioned that the forward-looking statements reflect
management's analysis only as of the date hereof, and the Company assumes no
obligation to update these statements. Actual events or results may differ
materially from the results discussed in the forward-looking statements. Factors
that might cause such a difference include, but are not limited to the risks and
uncertainties discussed herein, as well as other risks set forth under the
caption "Risk Factors" below and in the Company's Annual Report on Form 10-K for
the year ended December 31, 2002.

13



ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

This Management's Discussion and Analysis of Financial Condition and Results of
Operations contains forward-looking statements that are subject to many risks
and uncertainties that could cause actual results to differ significantly from
expectations. For more information on forward-looking statements, refer to the
"Special Note on Forward-Looking Statements" prior to this section. The
following discussion should be read in conjunction with the unaudited Condensed
Consolidated Financial Statements and the Notes thereto included in Item 1 of
this Quarterly Report on Form 10-Q and the Company's Form 10-K for the year
ended December 31, 2002.


Critical Accounting Policies

Castelle's financial statements and accompanying notes are prepared in
accordance with generally accepted accounting principles in the United States of
America. Preparing financial statements requires management to make estimates
and assumptions that affect the reported amounts of assets, liabilities, sales
and expenses. These estimates and assumptions are affected by management's
application of accounting policies. Critical accounting policies for Castelle
include revenue recognition; distributor programs and incentives; warranty;
credit, collection and allowances for doubtful accounts; inventories and related
allowance for obsolete and excess inventory; and income taxes, which are
discussed in more detail under the caption "Critical Accounting Policies" in the
Company's 2002 Annual Report on Form 10-K.




Consolidated Statements of Income - As a Percentage of Net Sales

Three months ended Six months ended
................................ ................................
June 30, 2003 June 30, 2002 June 30, 2003 June 30, 2002
---------------- -------------- ---------------- --------------


Net sales 100% 100% 100% 100%
Cost of sales 23% 30% 25% 31%
---------------- -------------- ---------------- --------------
Gross profit 77% 70% 75% 69%
---------------- -------------- ---------------- --------------

Operating expenses:
Research and development 17% 15% 16% 17%
Sales and marketing 30% 35% 30% 33%
General and administrative 20% 20% 19% 19%
Restructuring charges -- (2%) -- (1%)
---------------- -------------- ---------------- --------------
Total operating expenses 67% 68% 65% 68%
---------------- -------------- ---------------- --------------
Income from operations 10% 2% 10% 1%

Interest income, net * 1% * 1%
Other income, net (1%) * (1%) --
---------------- -------------- ---------------- --------------

Income before provision for income taxes 9% 3% 9% 2%
Provision for income taxes * -- * --
---------------- -------------- ---------------- --------------
Net income 9% 3% 9% 2%
================ ============== ================ ==============


* Less than 1%


14


Results of Operations

Net Sales

Net sales for the second quarter of 2003 increased 11% to $2.5
million from $2.3 million for the same period in 2002. The increase of
$250,000 was primarily attributable to an increase in shipments of our
products to domestic customers. Net sales for the first six months of 2003
increased 8% to $5.0 million from $4.6 million for the same period in 2002.
The increase of $382,000 was also due to increased shipments of our
products to domestic customers.

Domestic sales in the second quarter of 2003 were $2.1 million as
compared to $1.8 million for the same period in 2002, which represents
approximately 84% and 81% of total sales in the second quarter of 2003 and
2002, respectively. Domestic sales for the first six months of 2003 were
$4.2 million as compared to $3.8 million for the same period in 2002, which
represents approximately 83% of total sales for both periods.

International sales in the second quarter of 2003 were $411,000 as
compared to $420,000 for the same period in 2002, which represents
approximately 16% and 19% of total sales in the second quarter of 2003 and
2002, respectively. International sales for the first six months of 2003
were $828,000 as compared to $810,000 for the same period in 2002, which
represents approximately 17% of total sales for both periods.

Cost of Sales; Gross Profit

Gross profit was $1.9 million, or 77% of net sales, for the second
quarter of 2003, as compared to $1.6 million, or 70% of net sales, for the
same period of 2002. Gross profit for the first six months of 2003 and 2002
was $3.7 million and $3.2 million, or 75% of net sales and 69% of net
sales, respectively. Product cost reductions, outsourcing of our
manufacturing operations and a continuing shift in product mix, which is
resulting in a greater percentage of our sales arising from sales of our
fax server products that have a higher gross margin, contributed to the
improvements in gross profit.

Research & Development

Research and product development expenses for the second quarter
of 2003 were $429,000, or 17% of net sales, as compared to $349,000, or 15%
of net sales, for the same period in 2002. The increase was primarily due
to an increase in materials consumed for product development. For the first
six months of 2003, research and development expenses were $784,000, as
compared to $762,000 for the same period in 2002, or 16% of net sales in
each period.

Sales & Marketing

Sales and Marketing expenses for the second quarter of 2003 were
$760,000, or 30% of total net sales, as compared to $780,000, or 35% of net
sales, for the same period in 2002. Sales and Marketing expenses were $1.5
million, for both the first six months of 2003 and 2002, which represents
30% and 33% of net sales, respectively.

15


General & Administrative

General and administrative expenses were $509,000, or 20% of net
sales, for the second quarter of 2003, as compared to $450,000, or 20% of
net sales, for the same period in 2002. The increase of $59,000 was
primarily due to an increase in investor relations expenses of $50,000 and
compensation expenses of $27,000, offset in part by lower consulting
expenses of $36,000. For the first six months of 2003, General and
Administrative expenses were $966,000, or 19% of net sales, as compared to
$854,000, or 18% of net sales, for the same period in 2002. The increase of
$112,000 was chiefly due to higher levels of compensation of $93,000,
investors relations expenses of $77,000 and legal and accounting expenses
of $31,000, offset partially by lower consulting expenses of $54,000 and a
lower provision for doubtful accounts of $49,000.


Liquidity and Capital Resources

As of June 30, 2003, we had approximately $3.7 million of cash and cash
equivalents, an increase of $203,000 from December 31, 2002. The increase in
cash and cash equivalents was mostly attributable to positive cash flows from
operations of $281,000 due to improved net income, offset in part by purchases
of equipment of $99,000.

As of June 30, 2003, net accounts receivable were $765,000 compared to
$444,000 as of December 31, 2002. The increase in net accounts receivable was
mainly attributable to higher sales in June of 2003.

Net inventories as of June 30, 2003 were $872,000 compared to $1.1
million as of December 31, 2002. The reduction in inventory was mainly due to
more components being used in production than components purchased in the same
period.

We lease our corporate headquarters in Morgan Hill, California. The
lease on the Morgan Hill facility has a term of five years, expiring in December
2005, with one conditional three-year renewal option, which if exercised would
extend the lease to December 2008 commencing with rent at 95% of fair market
value. As of June 30, 2003, future minimum payments under the lease were
$663,000.

In December 2000, as a source of capital asset financing, we entered
into a loan and security agreement with a finance company for an amount of
$75,000. This loan bears interest at 12.8% and is repayable by December 2006. As
of June 30, 2003, the aggregate value of future minimum payments was $59,000.

In April 2001, as a source of capital asset financing, we entered into
a loan and security agreement with a finance company for an amount of $25,000.
This loan bears interest at 12.5% and is repayable by April 2004. As of June 30,
2003, the aggregate value of future minimum payments was $7,000.

We have a $3.0 million collateralized revolving line of credit with a
bank, which expires in March 2004, pursuant to which we may borrow 100% against
pledges of cash at the bank's prime rate. Borrowings under this line of credit
agreement are collateralized by all of our assets. As of June 30, 2003, we were
in compliance with the terms of the agreement and had no borrowings outstanding
under the line of credit.

We believe that our existing cash balances and anticipated cash flows
from operations will be sufficient to meet our anticipated capital requirements
for the next 12 months. However, a


16


decline in future orders and revenues might require us to seek additional
capital to meet our working capital needs during or beyond the next twelve
months if we are unable to reduce expenses to the degree necessary to avoid
incurring losses. If we have a need for additional capital resources, we may be
required to sell additional equity or debt securities, secure additional lines
of credit or obtain other third party financing. The timing and amount of such
capital requirements cannot be determined at this time and will depend on a
number of factors, including demand for our existing and new products, if any,
and changes in technology in the networking industry. There can be no assurance
that such additional financing will be available on satisfactory terms when
needed, if at all. Failure to raise such additional financing, if needed, may
result in our inability to achieve our long-term business objectives. To the
extent that additional capital is raised through the sale of additional equity
or convertible debt securities, the issuance of such securities would result in
additional dilution to our shareholders.

In addition, because we are dependent on a small number of distributors
for a significant portion of the sales of our products, the loss of any of our
major distributors or their inability to satisfy their payment obligations to us
could have a significant adverse effect on our business, operating results and
financial condition.

We believe that, for the periods presented, inflation has not had a
material effect on our operations.


Recent Accounting Pronouncements:

In November 2002, the EITF reached a consensus on Issue No. 00-21,
"Revenue Arrangements with Multiple Deliverables" ("EITF 00-21"). EITF 00-21
provides guidance on how to account for arrangements that involve the delivery
or performance of multiple products, services and/or rights to use assets. The
provisions of EITF 00-21 will apply to revenue arrangements entered into in
fiscal periods beginning after June 15, 2003. We are currently assessing the
impact of the adoption of this pronouncement on its consolidated financial
statements.

In January 2003, the FASB issued FASB Interpretation No. 46,
"Consolidation of Variable Interest Entities" ("FIN 46"). FIN 46 addresses
consolidation by business enterprises of variable interest entities. Under that
interpretation, certain entities known as Variable Interest Entities ("VIEs")
must be consolidated by the primary beneficiary of the entity. The primary
beneficiary is generally defined as having the majority of the risks and rewards
arising from the VIE. For VIEs in which a significant (but not majority)
variable interest is held, certain disclosures are required. FIN 46 applies
immediately to variable interest entities created after January 31, 2003, and
applies in the first year or interim period beginning after June 15, 2003 to
variable interest entities in which an enterprise holds a variable interest that
it acquired before February 1, 2003. We do not believe the adoption of this
interpretation will have a material impact on our consolidated results of
operations, financial position or cash flows.

In April 2003, the FASB issued SFAS No. 149, "Amendment of Statement
133 on Derivative Instruments and Hedging Activities." SFAS No. 149 amends and
clarifies accounting for derivative instruments, including certain derivative
instruments embedded in other contracts, and for hedging activities under SFAS
No. 133. The new guidance amends SFAS No. 133 for decisions made as part of the
Derivatives Implementation Group ("DIG") process that effectively required
amendments to SFAS No. 133, and decisions made in connection with other FASB
projects dealing with financial instruments and in connection with
implementation issues raised in relation to the application of the definition of
a derivative and characteristics of a derivative that contains financing
components. In addition, it clarifies when a derivative contains a financing


17


component that warrants special reporting in the statement of cash flows. SFAS
No. 149 is effective for contracts entered into or modified after June 30, 2003
and for hedging relationships designated after June 30, 2003. We do not believe
the adoption of SFAS No. 149 will have a material impact on our consolidated
results of operations, financial position or cash flows.

In May 2003, the FASB issued SFAS No. 150, "Accounting for Certain
Financial Instruments with Characteristics of both Liabilities and Equity." This
Statement establishes standards for how an issuer classifies and measures in its
statement of financial position certain financial instruments with
characteristics of both liabilities and equity. It requires that an issuer
classify a financial instrument that is within its scope as a liability (or an
asset in some circumstances) because that financial instrument embodies an
obligation of the issuer. This Statement is effective for financial instruments
entered into or modified after May 31, 2003 and otherwise is effective at the
beginning of the first interim period beginning after June 15, 2003, except for
mandatorily redeemable financial instruments of nonpublic entities. For
nonpublic entities, mandatorily redeemable financial instruments are subject to
the provisions of this Statement for the first period beginning after December
15, 2003. SFAS No. 150 is to be implemented by reporting the cumulative effect
of a change in accounting principle for financial instruments created before the
issuance date of the statement and still existing at the beginning of the
interim period of adoption. We do not believe the adoption of SFAS No. 150 will
have a material impact on our consolidated results of operations, financial
position or cash flows.


RISK FACTORS

Shareholders or investors considering the purchase of shares of our
common stock should carefully consider the following risk factors, in addition
to other information in this Quarterly Report on Form 10-Q and in our Annual
Report on Form 10-K for the year ended December 31, 2002. Additional risks and
uncertainties not presently known to us or that we currently deem immaterial
also may impair our business operations.

Our revenue and operating results have fluctuated in the past and are likely to
fluctuate significantly in the future, particularly on a quarterly basis.

Our operating results may vary significantly from quarter to quarter
due to many factors, some of which are outside our control. For example, the
following conditions could all affect our results:

|X| changes in our product sales and customer mix;
|X| constraints in our manufacturing and assembling operations;
|X| shortages or increases in the prices of raw materials and components;
|X| changes in pricing policy by us or our competitors;
|X| a slowdown in the growth of the networking market;
|X| seasonality;
|X| timing of expenditures; and
|X| economic conditions in the United States, Europe and Asia.

Our sales often reflect orders shipped in the same quarter in which
they are received. In addition, significant portions of our expenses are
relatively fixed in nature, and planned expenditures are based primarily on
sales forecasts. Therefore, if the Company inaccurately forecasts demand for our
products, the impact on net income may be magnified by the Company's inability
to adjust spending quickly enough to compensate for the net sales shortfall.

Other factors contributing to fluctuations in our quarterly operating
results include:

18


0 changes in the demand for our products;
0 customer order deferrals in anticipation of new versions of our products;
0 the introduction of new products and product enhancements by us or our
competitors;
0 the effects of filling the distribution channels following introductions of
new products and product enhancements;
0 potential delays in the availability of announced or anticipated products;
0 the mix of product and revenue derived from the sale of extended warranty
contracts;
0 the commencement or conclusion of significant development contracts;
0 changes in foreign currency exchange rates; and
0 the timing of significant marketing and sales promotions.

Based on the foregoing, we believe that quarterly operating results are
likely to vary significantly in the future and that period-to-period comparisons
of our results of operations are not necessarily meaningful and should not be
viewed as indications of future performance.

We have a history of losses and a large accumulated deficit.

We have experienced significant operating losses and, as of June 30,
2003, had an accumulated deficit of $23.6 million. Our development and marketing
of current and new products will continue to require substantial expenditures.
We incurred $591,000 of losses in 2001 attributable to a slowdown in demand for
our products due in part to industry-wide adverse economic factors. We have been
profitable since the third quarter of 2001, with total net income of $659,000 in
2002 and $471,000 in the first six months of 2003. There can be no assurance
that growth in net sales will be achieved or profitability sustained in future
years.

Our common stock is listed on the Nasdaq SmallCap Market, and we have had
difficulty satisfying the listing criteria to avoid the delisting of our common
stock.

Our common stock has been listed on the Nasdaq SmallCap Market since
April 1999. In order to maintain our listing on the Nasdaq SmallCap Market, we
must maintain total assets, capital and public float at specified levels, and
our common stock generally must maintain a minimum bid price of $1.00 per share.
If we fail to maintain the standards necessary to be quoted on the Nasdaq
SmallCap Market, our common stock could become subject to delisting. There can
be no assurance that we will be able to maintain the $1.00 minimum bid price per
share of our common stock and thus maintain our listing on the Nasdaq SmallCap
Market. We have traded below $1.00 as recently as December 2002.

If our common stock is delisted, trading in our common stock could be
conducted on the OTC Bulletin Board or in the over-the-counter market in what is
commonly referred to as the "pink sheets." If this occurs, a shareholder will
find it more difficult to dispose of our common stock or to obtain accurate
quotations as to the price of our common stock. Lack of any active trading
market would have an adverse effect on a shareholder's ability to liquidate an
investment in our common stock easily and quickly at a reasonable price. It
might also contribute to volatility in the market price of our common stock and
could adversely affect our ability to raise additional equity or debt financing
on acceptable terms or at all. Failure to obtain desired financing on acceptable
terms could adversely affect our business, financial condition and results of
operations.

The market for our products is affected by rapidly changing technology and if we
fail to predict and respond to customers' changing needs, our business,
operating results and financial condition may suffer.

The market for our products is affected by rapidly changing networking
technology, evolving industry standards and the Internet and other new
communication technologies.


19


We believe that our future success will depend upon our ability to enhance our
existing products and to identify, develop, manufacture and introduce new
products that

|X| conform to or support emerging network telecommunications standards; |X| are
compatible with a growing array of computer and peripheral devices; |X| support
popular computer and network operating systems and applications; |X| meet a wide
range of evolving user needs; and |X| achieve market acceptance.

There can be no assurance that we will be successful in these efforts.

We have incurred, and expect to continue to incur, substantial expenses
associated with the introduction and promotion of new products. There can be no
assurance that the expenses incurred will not exceed research and development
cost estimates or that new products will achieve market acceptance and generate
sales sufficient to offset development costs. In order to develop new products
successfully, we are dependent upon timely access to information about new
technological developments and standards. There can be no assurance that we will
have such access or will be able to develop new products successfully and
respond effectively to technological change or new product announcements by
others.

We expect that printer and other peripheral manufacturers will add
features to their products that make them more network accessible, which may
reduce demand for our print servers. There can be no assurance that products or
technologies developed by others will not render our products non-competitive or
obsolete. The fax-on-demand market in general has been negatively affected by
the growth of the Internet. Although we have new Web/fax/email products in
development, there can be no assurance these products will compete successfully.

Complex products such as those offered by us may contain undetected or
unresolved hardware defects or software errors when they are first introduced or
as new versions are released. Changes in our or our suppliers' manufacturing
processes or the inadvertent use of defective components could adversely affect
our ability to achieve acceptable manufacturing yields and product reliability.
We have in the past discovered hardware defects and software errors in certain
of our new products and enhancements after their introduction. There can be no
assurance that despite testing by us and by third-party test sites, errors will
not be found in future releases of our products, which would result in adverse
product reviews and negatively affect market acceptance of these products.

The introduction of new or enhanced products requires us to manage the
transition from the older products to the new or enhanced products or versions,
both internally and for customers. We must manage new product introductions so
as to minimize disruption in customer ordering patterns, avoid excessive levels
of older product inventories and ensure that adequate supplies of new products
can be delivered to meet customer demands. We have from time to time experienced
delays in the shipment of new products. There can be no assurance that we will
successfully manage future product transitions.

Our success depends upon the continued contributions of our key management,
marketing, product development and operational personnel.

Our success will depend, to a large extent, upon our ability to retain
and continue to attract highly skilled personnel in management, marketing,
product development and operations. Competition for employees in the computer
and electronics industries is intense, and there can be no assurance that we
will be able to attract and retain enough qualified employees. Volatility or
lack of positive performance in our stock price may also adversely affect our
ability to retain


20


and continue to attract key employees, many of whom have been granted stock
options. Our inability to retain and attract key employees could have a material
adverse effect on our product development, business, operating results and
financial condition. We do not carry key person life insurance with
respect to any of our personnel.

The introduction of new products may reduce the demand for our existing products
and increase returns of existing products.

From time to time, we may announce new products, product versions,
capabilities or technologies that have the potential to replace or shorten the
life cycles of existing products. The release of a new product or product
version may result in the write-down of products in inventory if this inventory
becomes obsolete. We have in the past experienced increased returns of a
particular product version following the announcement of a planned release of a
new version of that product. There can be no assurance that product returns will
not exceed our allowance for these returns in the future and will not have a
material adverse effect on our business, operating results and financial
condition.

If we fail to obtain components of our products from third-party suppliers and
assembled finished products from our subcontractors, our business could suffer.

Our products require components procured from third-party suppliers.
Some of these components are available only from a single source or from limited
sources. In addition, we subcontract a substantial portion of our manufacturing
to third parties for the assembly of finished products, and there can be no
assurance that these subcontractors will be able to support our manufacturing
requirements, at acceptable qualities and to deliver them to us in a timely
manner. We purchase components on a purchase order basis, and generally have no
long-term contracts for these components. If we are unable to obtain a
sufficient supply of high-quality components from our current sources, we could
experience delays or reductions in product shipments. Furthermore, a significant
increase in the price of one or more of these components or our inability to
lower component or sub-assembly prices in response to competitive price
reductions could adversely affect our gross margin.

Government regulation could increase our costs of doing business and adversely
affect our gross margin.

Certain aspects of the networking industry in which we compete are
regulated both in the United States and in foreign countries. Imposition of
public carrier tariffs, taxation of telecommunications services and the
necessity of incurring substantial costs and expenditure of managerial resources
to obtain regulatory approvals, or the inability to obtain regulatory approvals
within a reasonable period of time, could have a material, adverse effect on our
business, operating results and financial condition. This is particularly true
in foreign countries where telecommunications standards differ from those in the
United States. Our products must comply with a variety of equipment, interface
and installation standards promulgated by communications regulatory authorities
in different countries. Changes in government policies, regulations and
interface standards could require the redesign of products and result in product
shipment delays which could have a material, adverse impact on our business,
operating results and financial condition.

We depend on proprietary technology, and inability to develop and protect this
technology or license it from third parties could adversely affect our business,
operating results and financial condition.

21


Our success depends upon our technological expertise and proprietary
software technology. We rely upon a combination of contractual rights and
copyright, trademark and trade secret laws to establish and protect our
technologies. It may be possible for unauthorized third parties to copy our
products or to reverse engineer or obtain and use information that we regard as
proprietary. In addition, the laws of some foreign countries either do not
protect our proprietary rights or offer only limited protection. Given the rapid
evolution of technology and uncertainties in intellectual property law in the
United States and internationally, there can be no assurance that our current or
future products will not be subject to third-party claims of infringement. Any
litigation to determine the validity of any third-party claims could result in
significant expense and divert the efforts our technical and management
personnel, whether or not any litigation is determined in favor of us. In the
event of an adverse result in litigation, we could be required to expend
significant resources to develop non-infringing technology or to obtain licenses
to the technology that is the subject of the litigation. There can be no
assurance that the Company would be successful in this development or that any
such licenses would be available on commercially reasonable terms. We also rely
on technology licensed from third parties. There can be no assurance that these
licenses will continue to be available upon reasonable terms, if at all. Any
impairment or termination of our relationship with third-party licensors could
have a material adverse effect on our business, operating results and financial
condition. There can be no assurance that our precautions will be adequate to
deter misappropriation or infringement of our proprietary technologies.

We have received, and may receive in the future, communications
asserting that our products infringe the proprietary rights of third parties or
seeking indemnification against the alleged infringement. There can be no
assurance that third parties will not assert infringement claims against us with
respect to current or future products or that any assertion may not require us
to enter into royalty arrangements or result in costly litigation. Any claims,
with or without merit, can be time consuming and expensive to defend. There can
be no assurance that any intellectual property litigation will not have a
material adverse effect on our business, operating results and financial
condition.

Our stock price has been volatile, and is likely to continue to be volatile in
the future.

The price of our common stock has fluctuated widely in the past. Sales
of substantial amounts of our common stock, or the perception that such sales
could occur, could adversely affect prevailing market prices for our common
stock. Our management believes past fluctuations may have been caused by the
factors identified above, and that these factors may continue to affect the
market price of our common stock. Additionally, stock markets have experienced
extreme price volatility in recent years. This volatility has had a substantial
effect on the market price of our common stock and other high technology
companies, often for reasons unrelated to operating performance. We anticipate
that prices for our common stock may continue to be volatile. Future stock price
volatility may result in the initiation of securities litigation against us,
which may divert substantial management and financial resources and have an
adverse effect on our business, operating results and financial condition.

We may require additional capital in the future, and may be unable to obtain
this capital at all or on commercially reasonable terms.

The development and marketing of products requires significant amounts
of capital. A decline in future orders and revenues might require us to seek
additional capital to meet our working capital needs during or beyond the next
twelve months if we are unable to reduce expenses to the degree necessary to
avoid incurring losses. If we need additional capital resources, we may be
required to sell additional equity or debt securities, secure additional lines

22


of credit or obtain other third party financing. The timing and amount of such
capital requirements cannot be determined at this time and will depend on a
number of factors, including demand for our existing and new products and
changes in technology in the networking industry. There can be no assurance that
additional financing will be available on satisfactory terms when needed, if at
all. Failure to raise such additional financing, if needed, may result in our
inability to achieve our long-term business objectives. To the extent that
additional capital is raised through the sale of additional equity or
convertible debt securities, the issuance of these securities would result in
additional dilution to our shareholders.

The costs of compliance with recent developments in corporate governance
regulation may affect our business, operating results and financial condition in
ways that presently cannot be predicted.

Beginning with the enactment of the Sarbanes-Oxley Act of 2002, a
significant number of new corporate governance requirements have been adopted or
proposed through legislation and regulation by the Securities and Exchange
Commission and the Nasdaq National Stock Market. We may have difficulty in
complying with these requirements at all times in the future. Additionally, we
expect these developments to increase our legal compliance and accounting costs,
and to make some activities more difficult, such as stockholder approval of new
stock option plans. We expect these developments to make it more difficult and
more expensive for us to obtain director and officer liability insurance, and we
may be required to accept reduced coverage or incur substantially higher costs
to obtain coverage. These developments could make it more difficult for us to
attract and retain qualified members of our board of directors, or qualified
executive officers.

Voting control by officers, directors and affiliates may delay, defer or prevent
a change of control.

At August 4, 2003, our officers and directors and their affiliates
beneficially owned approximately 25% of the outstanding shares of common stock.
Accordingly, together they had the ability to significantly influence the
election of our directors and other corporate actions requiring shareholder
approval. Such concentration of ownership may have the effect of delaying,
deferring or preventing a change in control.

Provisions in our charter documents might deter a company from acquiring us,
which could inhibit your ability to receive an acquisition premium for your
shares.

Our Board of Directors has authority to issue shares of preferred stock
and to fix the rights, including voting rights, of these shares without any
further vote or action by the shareholders. The rights of the holders of our
common stock will be subject to, and may be adversely affected by, the rights of
the holders of any preferred stock that may be issued in the future. The
issuance of preferred stock, while providing desirable flexibility in connection
with possible acquisitions and other corporate purposes, could have the effect
of making it more difficult for a third party to acquire a majority of our
outstanding voting stock, thereby delaying, deferring or preventing a change in
control. Furthermore, such preferred stock may have other rights, including
economic rights, senior to the common stock, and as a result, the issuance
thereof could have a material adverse effect on the market.

23


ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

We had no holdings of derivative financial or commodity instruments at
March 31, 2003. However, we are exposed to financial market risks, including
changes in interest rates and foreign currency exchange rates. While much of our
revenue is transacted in U.S dollars, some revenues and capital spending are
transacted in Pounds Sterling. These amounts are not currently material to our
financial statements; therefore, we believe that foreign currency exchange rates
should not materially affect our overall financial position, results of
operations or cash flows. The fair value of our money market accounts or related
income would not be significantly impacted by increases or decreases in interest
rates due mainly to the highly liquid nature of this investment.


ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Regulations under the Securities Exchange Act of 1934 require public
companies, including our company, to maintain "disclosure controls and
procedures," which are defined to mean a company's controls and other procedures
that are designed to ensure that information required to be disclosed in the
reports that it files or submits under the Securities Exchange Act of 1934 is
recorded, processed, summarized and reported, within the time periods specified
in the Securities and Exchange Commission's rules and forms. Our chief executive
officer and our chief financial officer, based upon their evaluation of our
disclosure controls and procedures,, concluded that as of the end of the period
covered by this report, our disclosure controls and procedures were effective
for this purpose.

Changes in Internal Controls

There were no significant changes in our internal controls or, to our
knowledge in other factors that have materially affected, or are reasonably
likely to materially affect, these controls subsequent to the date of their
evaluation, which occurred as of the evaluation date referenced in the above
paragraph.

24


PART II - OTHER INFORMATION


ITEM 1. LEGAL PROCEEDINGS

None.


ITEM 2. CHANGES IN SECURITIES AND USE OF PROCEEDS

None


ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None


ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.


ITEM 5. OTHER INFORMATION

In April 2003, our board of directors appointed Donald Rich to its
audit committee. Mr. Rich, our former Chief Executive Officer and
President, has been a director of the company since 1998. While Mr.
Rich is not "independent" as defined by The Nasdaq Stock Market, he
was appointed to the audit committee based on an exception that
allows the appointment of one director who is not "independent" so
long as that director, or his immediate family, is not an employee of
the company. Neither Mr. Rich nor any member of his immediate family
has been an employee of the company since April 2002.


ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

(a) Exhibits:

Additional Exhibit

In accordance with SEC Release No. 33-8212, Exhibits 32.1 and
32.2 are to be treated as "accompanying" this report rather
than "filed" as part of the report.

31.1 Certification pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 302 of the Sarbanes-Oxley
Act of 2002, executed by Scott C. McDonald, Chief
Executive Officer and President of Castelle

31.2 Certification pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 302 of the Sarbanes-Oxley
Act of 2002, executed by Paul Cheng, Chief Financial
Officer of Castelle

32.1 Certification pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, executed by Scott C. McDonald, Chief
Executive Officer and President of Castelle

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32.2 Certification pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, executed by Paul Cheng, Chief Financial
Officer of Castelle

(b) Reports on Form 8-K

During the second quarter of 2003, Castelle filed a Form 8-K
on April 23, 2003. Furnished under Item 9, "Regulation FD
Disclosure", Castelle filed a press release regarding its
financial results for its first fiscal quarter ended March 31,
2003.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.


CASTELLE

By: /s/ Scott C. McDonald Date: August 12, 2003
Scott C. McDonald
Chief Executive Officer and President
(Principal Executive Officer)

By: /s/ Paul Cheng Date: August 12, 2003
Paul Cheng
Vice President of Finance and Administration
Chief Financial Officer
(Principal Financial Officer and Principal Accounting Officer)

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