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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(Print or Type Responses)

1. Name and Address of Reporting Person * Cannon Timothy Lon   2. Issuer Name and Ticker or Trading Symbol Houghton Mifflin Harcourt Co [HMHC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) See remarks. (Last) (First) (Middle) C/O HOUGHTON MIFFLIN HARCOURT CO.,, 222 BERKELEY STREET 3. Date of Earliest Transaction (Month/Day/Year) 05/27/2015 (Street) BOSTON, MA 02116 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 Common Stock 05/27/2015   M   15,000 A $ 12.5 27,567 D   Common Stock 05/27/2015   S(1)   15,000 D $ 25.7974 (2) 12,567 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Employee Stock Option (Right to Buy)

$ 12.5

05/27/2015

M

15,000

(3)

06/22/2019

Common Stock

15,000

$ 0

292,017

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Cannon Timothy Lon C/O HOUGHTON MIFFLIN HARCOURT CO., 222 BERKELEY STREET BOSTON, MA 02116			See remarks.

Signatures

/s/ William F. Bayers, Attorney-in-Fact		05/29/2015
**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)	These shares were sold pursuant to a Rule 10b5-1 trading plan.
(2)	The sale price represents the weighted average sale price for multiple transactions reported on this line. The prices of the transactions ranged from $25.49 to $25.96. Upon request of the staff of the Securities and Exchange Commission, Houghton Mifflin Harcourt Company (the "Company") or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold at each separate price.
(3)	50% of this grant of employee stock options has vested and is currently exercisable. The remaining stock options vest in two equal installments on June 22, 2015 and June 22, 2016, subject to continued employment with the Company.
Remarks: Executive Vice President, HMH International Operations and Global Strategic Alliances. William F. Bayers is the Executive Vice President, Secretary and General Counsel of the Company.

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