FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * CHASE PETER R   2. Issuer Name and Ticker or Trading Symbol CHASE CORP [CCF] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Executive Chairman (Last) (First) (Middle) 295 UNIVERSITY AVE. 3. Date of Earliest Transaction (Month/Day/Year) 08/27/2018 (Street) WESTWOOD, MA 02090 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Chase Corporation Common Stock               5,693 D   Chase Corporation Common Stock               258,451 (2) I Peter R. Chase 2016 Qualified Annuity Trust #2-ML Chase Corporation Common Stock 08/27/2018   S   1,000 (5) D $ 127.55 (6) 223,991 (1) I Peter R. Chase Insurance Trust Chase Corporation Common Stock 08/29/2018   S   500 (5) D $ 127.21 (7) 223,491 (1) I Peter R. Chase Insurance Trust Chase Corporation Common Stock               75,612 (3) I Peter R. Chase 2018 Qualified Annuity Trust #2-ML Chase Corporation Common Stock               415,000 (4) I Peter R. Chase 2018 Qualified Annuity Trust-RJ

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CHASE PETER R 295 UNIVERSITY AVE. WESTWOOD, MA 02090	X	X	Executive Chairman

Signatures

Paula Myers by power of attorney		08/29/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Represents shares held by the Peter R. Chase Insurance Trust.
(2)	Reflects shares held by the Peter R. Chase 2016 Qualified Annuity Trust #2, a grantor retained annuity trust. ML
(3)	Represents shares held by the Peter R. Chase 2018 Qualified Annuity Trust #2, a grantor retained annuity trust. ML
(4)	Represents shares held by the Peter R. Chase 2018 Qualified Annuity Trust, a grantor retained annuity trust. RJ
(5)	Represents shares sold pursuant to a trading plan that was adopted on February 13, 2018, complying with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.
(6)	Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.25 to $130.00 for all transactions reported on this date utilizing a weighted-average price, the reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
(7)	Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.20 to $127.30 for all transactions reported on this date utilizing a weighted-average price, the reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

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