| Feb 28, 2019 FMForm 4 → | Mar 4, 8:51 pm EST | Houghton Mifflin Harcourt CoHMHC | 21,995 | $8.00 | $40,025 | 46,867 | — | plan? |
| Feb 27, 2019 FMForm 4 → | Mar 1, 8:13 pm EST | Houghton Mifflin Harcourt CoHMHC | 22,348 | $8.49 | $44,190 | 34,878 | — | plan? |
| Mar 3, 2018 DFForm 4 → | Mar 6, 8:38 pm EST | Houghton Mifflin Harcourt CoHMHC | 40,185 | $6.85 | $17,625 | 22,940 | — | plan? |
| Mar 1, 2018 FMForm 4 → | Mar 5, 5:54 pm EST | Houghton Mifflin Harcourt CoHMHC | 8,734 | $6.65 | $17,303 | 63,125 | — | plan? |
| Feb 28, 2018 FMForm 4 → | Mar 2, 8:40 pm EST | Houghton Mifflin Harcourt CoHMHC | 15,733 | $6.80 | $33,143 | 59,595 | — | plan? |
| Mar 3, 2017 FForm 4 → | Mar 7, 8:29 pm EST | Houghton Mifflin Harcourt CoHMHC | 2,820 | $10.55 | $29,751 | 53,610 | — | plan? |
| Mar 1, 2017 FMForm 4 → | Mar 3, 9:40 pm EST | Houghton Mifflin Harcourt CoHMHC | 9,160 | $11.00 | $33,308 | 56,430 | — | plan? |
| Jan 31, 2017 FMForm 4 → | Feb 2, 8:42 pm EST | Houghton Mifflin Harcourt CoHMHC | 666 | $11.30 | $2,633 | 53,326 | — | plan? |
| Mar 3, 2016 FForm 4 → | Mar 7, 8:57 pm EST | Houghton Mifflin Harcourt CoHMHC | 2,831 | $19.77 | $55,969 | 53,126 | — | plan? |
| Jan 31, 2016 FMForm 4 → | Feb 2, 8:03 pm EST | Houghton Mifflin Harcourt CoHMHC | 664 | $17.84 | $4,103 | 55,957 | — | plan? |
| Aug 31, 2015 SForm 4 → | Sep 2, 5:20 pm EDT | Houghton Mifflin Harcourt CoHMHC | 20,000 | $22.55 | $451,072 | 55,753 | −26.4% | plan? |
| Aug 31, 2015 MForm 4 → | Sep 2, 5:20 pm EDT | Houghton Mifflin Harcourt CoHMHC | 20,000 | $12.50 | $250,000 | 75,753 | — | plan? |
| Jul 29, 2015 SForm 4 → | Jul 30, 5:23 pm EDT | Houghton Mifflin Harcourt CoHMHC | 20,000 | $25.97 | $519,452 | 55,753 | −26.4% | plan? |
| Jul 29, 2015 MForm 4 → | Jul 30, 5:23 pm EDT | Houghton Mifflin Harcourt CoHMHC | 20,000 | $12.50 | $250,000 | 75,753 | — | plan? |
| Jun 30, 2015 SForm 4 → | Jul 1, 8:31 pm EDT | Houghton Mifflin Harcourt CoHMHC | 20,000 | $25.28 | $505,674 | 55,753 | −26.4% | plan? |
| Jun 30, 2015 MForm 4 → | Jul 1, 8:31 pm EDT | Houghton Mifflin Harcourt CoHMHC | 20,000 | $12.50 | $250,000 | 75,753 | — | plan? |
| May 28, 2015 SForm 4 → | May 29, 3:41 pm EDT | Houghton Mifflin Harcourt CoHMHC | 20,000 | $26.09 | $521,772 | 55,753 | −26.4% | plan? |
| May 28, 2015 MForm 4 → | May 29, 3:41 pm EDT | Houghton Mifflin Harcourt CoHMHC | 20,000 | $12.50 | $250,000 | 75,753 | — | plan? |
| Mar 12, 2015 SForm 4 → | Mar 16, 6:47 pm EDT | Houghton Mifflin Harcourt CoHMHC | 30,000 | $21.60 | $648,012 | 55,753 | −35.0% | plan? |
| Mar 12, 2015 MForm 4 → | Mar 16, 6:47 pm EDT | Houghton Mifflin Harcourt CoHMHC | 30,000 | $12.50 | $375,000 | 85,753 | — | plan? |
| Mar 3, 2015 AForm 4 → | Mar 5, 9:48 pm EST | Houghton Mifflin Harcourt CoHMHC | 55,522 | — | — | 55,753 | — | plan? |
| Feb 27, 2015 SForm 4 → | Mar 3, 8:07 pm EST | Houghton Mifflin Harcourt CoHMHC | 15,000 | $19.97 | $299,490 | 231 | −98.5% | plan? |
| Feb 27, 2015 MForm 4 → | Mar 3, 8:07 pm EST | Houghton Mifflin Harcourt CoHMHC | 15,000 | $12.50 | $187,500 | 15,231 | — | plan? |
| Jan 31, 2015 FMForm 4 → | Feb 3, 12:27 pm EST | Houghton Mifflin Harcourt CoHMHC | 635 | $19.68 | $3,975 | 231 | — | plan? |
| Jan 27, 2015 SForm 4 → | Jan 29, 4:40 pm EST | Houghton Mifflin Harcourt CoHMHC | 15,000 | $19.87 | $298,124 | 0 | −100% | plan? |
| Jan 27, 2015 MForm 4 → | Jan 29, 4:40 pm EST | Houghton Mifflin Harcourt CoHMHC | 15,000 | $12.50 | $187,500 | 15,000 | — | plan? |