UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-K/A

(Amendment No. 1)

(Mark One)

or

Commission File Number 001-35269

INVENSENSE, INC.

(Exact name of registrant as specified in its charter)

(408) 988-7339

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    YES  x    NO  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    YES  ¨    NO  x

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  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    YES  x    NO  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act:

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    YES  ¨  NO  x

As of September 27, 2013, the last business day of the registrant’s most recently completed second fiscal quarter, the aggregate market value of registrant’s voting and non-voting common stock held by non-affiliates was approximately $1,300 million, based upon the closing sale price of the common stock as reported on the New York Stock Exchange. This calculation excludes the shares of common stock held by each officer, director and holder of 5% or more of the outstanding common stock as of September 27, 2013. This calculation does not reflect a determination that such persons are affiliates for any other purposes.

As of May 7, 2014, there were 88,185,669 shares of the registrant’s common stock, $0.001 par value, outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

None.

EXPLANATORY NOTE

InvenSense, Inc. (the “Company” or “our”) is filing this Amendment No. 1 to Annual Report on Form 10-K/A (this “Amendment”) to our Annual Report on Form 10-K for the fiscal year ended March 30, 2014, as filed with the Securities and Exchange Commission (the “SEC”) on May 29, 2014 (the “Original Filing”). The purpose of this Amendment is solely to re-file Exhibits 31.1 and 31.2 to the Original Filing. In accordance with Rule 12b-15 of the Exchange Act, the Company has set forth the text of Item 15, as amended, in its entirety below.

Except as set forth in Part IV below and in any exhibits attached hereto, no other changes are made to the Original Filing. The Original Filing continues to speak as of the date of the Original Filing. Unless expressly stated, this Amendment does not reflect events occurring after the filing date of the Original Filing, nor does it modify or update in any way the disclosures contained in the Original Filing.

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PART IV

(b) Exhibits

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this Amendment No. 1 to its Annual Report on Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized.

Pursuant to the requirements of the Securities Exchange Act of 1934, this Amendment No. 1 to Annual Report on Form 10-K has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

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