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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001564590-21-008418
Filing Date
2021-02-25
Accepted
2021-02-25 07:01:48
Documents
148
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 10-K hmhc-10k_20201231.htm   iXBRL 10-K 7084865
2 EX-21.1 hmhc-ex211_13.htm EX-21.1 2760
3 EX-23.1 hmhc-ex231_11.htm EX-23.1 2064
4 EX-31.1 hmhc-ex311_14.htm EX-31.1 13433
5 EX-31.2 hmhc-ex312_9.htm EX-31.2 13455
6 EX-32.1 hmhc-ex321_6.htm EX-32.1 7410
7 EX-32.2 hmhc-ex322_12.htm EX-32.2 7566
8 GRAPHIC g1whmcriwpwe000001.jpg GRAPHIC 64189
9 GRAPHIC g1whmcriwpwe000002.jpg GRAPHIC 162388
  Complete submission text file 0001564590-21-008418.txt   27807728

Data Files

Seq Description Document Type Size
10 XBRL TAXONOMY EXTENSION SCHEMA hmhc-20201231.xsd EX-101.SCH 116281
11 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE hmhc-20201231_cal.xml EX-101.CAL 147653
12 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE hmhc-20201231_def.xml EX-101.DEF 535361
13 XBRL TAXONOMY EXTENSION LABEL LINKBASE hmhc-20201231_lab.xml EX-101.LAB 949274
14 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE hmhc-20201231_pre.xml EX-101.PRE 868297
15 EXTRACTED XBRL INSTANCE DOCUMENT hmhc-10k_20201231_htm.xml XML 6709778
Mailing Address 125 HIGH STREET BOSTON MA 02110
Business Address 125 HIGH STREET BOSTON MA 02110 617-351-5000
Houghton Mifflin Harcourt Co (Filer) CIK: 0001580156 (see all company filings)

IRS No.: 271566372 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-36166 | Film No.: 21676356
SIC: 2731 Books: Publishing or Publishing & Printing
Office of Manufacturing