Houghton Mifflin Harcourt Co

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Certification of termination of registration of a class of securities (Section 12(b))

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Notice of Effectiveness

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

1.02,2.01,3.01,3.03,5.01,5.02,5.03,7.01,9.01

Notification of removal from listing and/or registration on a national securities exchange

Entry into a Material Definitive Agreement

Letter from the SEC

8.01

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

No description available

1.01,7.01,9.01

No description available

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

Specialized Disclosure Report

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

5.02,5.07,9.01

2.01,7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

1.01,7.01,9.01

5.02

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

Notice of Effectiveness

Prospectus Supplement for Primary Offering

Letter from the SEC

Correspondence with the SEC

Registration statement under Securities Act of 1933

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

5.03,9.01

2.02,2.05,9.01

Cost Associated with Exit or Disposal Activities

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Specialized Disclosure Report

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

5.02,5.07,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Letter from the SEC

Correspondence with the SEC

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Post Effective Amendment to S-8

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

Additional Information for Proxy Statement/ Votes

Prospectus Supplement for Primary Offering

Additional Information for Proxy Statement/ Votes

Notice of Effectiveness

Automatic Shelf Registration

Post-effective amendment to a registration statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Prospectus Supplement for Primary Offering

Additional Information for Proxy Statement/ Votes

CROVITZ L GORDON

DOLAN MICHAEL

Dunkin Amy

FISH LAWRENCE K

Evans Michael Edmund

Greenthal Jill A

MCKERNAN JOHN R JR

Fields Matthew M.

KILLIAN JOHN F

Reyes Alejandro

Lynch John J Jr

Weber Tracey Drake

Bayers William Frederick

ONeill James P.

Brizard Jean-Claude

Abbott Joseph Patrick Jr.