| 07/09/2026 4:36 PM | HMH (2021880) Subject MILLENNIUM MANAGEMENT LLC (1273087) Filed by | Form SCHEDULE 13G/A | |
| 06/23/2026 5:55 PM | HMH (2021880) Issuer Skogerbo Pal (2035218) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/23/2026 5:38 PM | Dyrseth Roy A. (2035162) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/23/2026 5:38 PM | HMH (2021880) Issuer Qureshi Hunain (2035763) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/23/2026 5:41 PM | HMH (2021880) Issuer RETTIG DWIGHT W (1228420) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/23/2026 5:42 PM | HMH (2021880) Issuer McGee Thomas W. (2035200) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/23/2026 5:47 PM | CHAUVIERE E CHARLS (1240953) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/23/2026 5:51 PM | Bergsvik Eirik (2035158) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/07/2026 2:08 PM | CHAUVIERE E CHARLS (1240953) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/07/2026 2:17 PM | HMH (2021880) Issuer RETTIG DWIGHT W (1228420) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/07/2026 1:56 PM | Dyrseth Roy A. (2035162) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
Get the Latest News and Ratings for HMH and Related Stocks Enter your email address below to receive the latest news and analysts' ratings for HMH and its competitors with MarketBeat's FREE daily newsletter.
|
| 05/07/2026 1:57 PM | HMH (2021880) Issuer McGee Thomas W. (2035200) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/07/2026 2:00 PM | HMH (2021880) Issuer Skogerbo Pal (2035218) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/07/2026 2:04 PM | HMH (2021880) Issuer Qureshi Hunain (2035763) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/07/2026 2:06 PM | Bergsvik Eirik (2035158) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/06/2026 3:17 PM | HMH (2021880) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 05/06/2026 3:18 PM | HMH (2021880) Filer | Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
| 05/04/2026 7:24 PM | Akastor AS (2124921) Reporting Akastor ASA (2037057) Reporting HMH (2021880) Issuer Mercury HoldCo AS (2124920) Reporting Mercury HoldCo Inc. (2124922) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/04/2026 7:00 PM | Baker Hughes Co (1701605) Reporting Baker Hughes Co (1701605) Reporting Baker Hughes Holdings LLC (808362) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/09/2026 3:23 PM | CITADEL ADVISORS LLC (1423053) Filed by HMH (2021880) Subject | Form SCHEDULE 13G | |
| 04/08/2026 3:47 PM | HMH (2021880) Subject MILLENNIUM MANAGEMENT LLC (1273087) Filed by | Form SCHEDULE 13G | |
| 04/08/2026 3:14 PM | Encompass Capital Advisors LLC (1541901) Filed by HMH (2021880) Subject | Form SCHEDULE 13G | |
| 04/06/2026 3:26 PM | HMH (2021880) Subject Point72 Asset Management, L.P. (1603466) Filed by | Form SCHEDULE 13G | |
| 04/06/2026 1:51 PM | HMH (2021880) Issuer Stoknes Svein Oskar (2116277) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:37 PM | Bergsvik Eirik (2035158) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:37 PM | HMH (2021880) Issuer RETTIG DWIGHT W (1228420) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:41 PM | HMH (2021880) Issuer Rabun Daniel Wayne (1354803) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:41 PM | HMH (2021880) Issuer McAllister Kathleen S (1614884) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:43 PM | HMH (2021880) Issuer Qureshi Hunain (2035763) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:44 PM | HMH (2021880) Issuer McGee Thomas W. (2035200) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:45 PM | HMH (2021880) Issuer Loeffler Lance (1759163) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:46 PM | HMH (2021880) Issuer Skogerbo Pal (2035218) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:50 PM | Dyrseth Roy A. (2035162) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:34 PM | CHAUVIERE E CHARLS (1240953) Reporting HMH (2021880) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/06/2026 1:36 PM | HMH (2021880) Issuer Kjelstad Karl Erik (2037060) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 04/02/2026 3:12 PM | HMH (2021880) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 04/01/2026 3:48 PM | HMH (2021880) Filer | Form 424B4 | |
| 04/01/2026 9:33 AM | HMH (2021880) Issuer Loeffler Lance (1759163) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 04/01/2026 9:26 AM | HMH (2021880) Issuer McAllister Kathleen S (1614884) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 11:15 PM | HMH (2021880) Filer | Form EFFECT | |
| 03/31/2026 4:41 PM | HMH (2021880) Issuer Magno Maria Georgia (2006809) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
CODE RED: AI Meltdown Imminent? (Ad) After correctly predicting the 2008 and 2020 stock market meltdowns, I believe this AI company is about to trigger the next crash. The research firm Bernstein Research said this AI company has the power to crash the global economy for a decade, the CEO just issued a CODE RED in an internal memo warning employees they're dealing with a critical situation, and another company executive even implied they might need a government bailout. The last time I saw something like this was in 2008 when I predicted a stock market meltdown just three weeks before Lehman went under. See the five simple steps to prepare before it's too late |
| 03/31/2026 4:22 PM | HMH (2021880) Issuer Stoknes Svein Oskar (2116277) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:28 PM | Bailey Judson E. (2035404) Reporting HMH (2021880) Issuer | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:30 PM | HMH (2021880) Issuer Kjelstad Karl Erik (2037060) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:13 PM | HMH (2021880) Issuer McGee Thomas W. (2035200) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:18 PM | HMH (2021880) Issuer Skogerbo Pal (2035218) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:19 PM | HMH (2021880) Issuer RETTIG DWIGHT W (1228420) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:19 PM | HMH (2021880) Issuer Qureshi Hunain (2035763) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:06 PM | CHAUVIERE E CHARLS (1240953) Reporting HMH (2021880) Issuer | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:06 PM | Dyrseth Roy A. (2035162) Reporting HMH (2021880) Issuer | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:08 PM | HMH (2021880) Issuer Rabun Daniel Wayne (1354803) Reporting | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 4:08 PM | Bergsvik Eirik (2035158) Reporting HMH (2021880) Issuer | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 3:53 PM | Baker Hughes Co (1701605) Reporting Baker Hughes Co (1701605) Reporting Baker Hughes Holdings LLC (808362) Reporting HMH (2021880) Issuer | Form 3 Initial statement of beneficial ownership of securities | |
| 03/31/2026 1:45 PM | HMH (2021880) Filer | Form CERT | |
| 03/31/2026 10:04 AM | HMH (2021880) Filer | Form 8-A12B | |
| 03/23/2026 3:05 PM | HMH (2021880) Filer | Form S-1/A | |
| 11/10/2025 3:57 PM | HMH (2021880) Filer | Form S-1/A | |
| 08/19/2025 11:52 AM | HMH (2021880) Filer | Form S-1/A | |