UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) 
OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): February 26, 2013

Commission File Number: 1-9852

CHASE CORPORATION

(Exact name of registrant as specified in its charter)

26 Summer Street, Bridgewater, Massachusetts 02324

(Address of Principal Executive Offices, Including Zip Code)

(508) 819-4200

(Registrant’s Telephone Number, Including Area Code)

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01  Regulation FD Disclosure

On February 26, 2013, Chase Corporation (the “Company”) was notified that a trust for the benefit of an adult child of Peter R. Chase, Chairman and Chief Executive Officer of the Company, of which Mr. Chase’s spouse is trustee, entered into a pre-arranged stock trading plan to sell up to 25,000 shares of the Company’s common stock.  The stock trading plan will be adopted in accordance with the guidelines as specified under Rule 10b5-1 of the Securities Exchange Act of 1934 and the Company’s policies regarding stock transactions.

Rule 10b5-1 permits insiders to implement written, pre-arranged stock trading plans when they are not in possession of material non-public information. These plans establish predetermined trading parameters that do not permit the person adopting the plan to exercise any subsequent influence over how, when, or whether to effect trades. Using these plans, insiders can gradually diversify their investment portfolios, spread stock trades out over an extended period of time to reduce market impact, and avoid concerns about transactions occurring at a time when they might possess inside information.

The stock trading plan will occur over a period commencing on April 1, 2013 and ending no later than September 30, 2013.  The transactions under this stock trading plan will be disclosed publicly through required filings with the Securities and Exchange Commission.

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.

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