HMH COO has 3,442 shares withheld for taxes

HMH’s Chief Operations Officer had 3,442 shares withheld for taxes on RSU vesting, leaving 85,667 shares held directly.

Rhea-AI Filing Summary

HMH Holding Inc (HMH) reported that Chief Operations Officer E. Charls Chauviere had 3,442 shares of Class A common stock withheld on September 1, 2026 to satisfy tax withholding obligations upon the vesting of restricted stock units. These shares were treated as a disposition at a reference value of $19.26 per share and were withheld rather than sold in the market. After this tax-withholding event, Chauviere directly held 85,667 shares of Class A common stock. The net settlement was approved by the board of directors pursuant to Rule 16b-3 under the Securities Exchange Act of 1934.

Insider Trade Summary

Tax Withholding: 3,442 shares

Tax Withholding 1 txn

Insider CHAUVIERE E CHARLS

Role Chief Operations Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1	3,442	$19.26	$66K

Holdings After Transaction: Class A Common Stock — 85,667 shares (Direct)

Footnotes (1)

1. F1. Represents shares of Class A common stock, par value $0.01 per share of the Issuer withheld to satisfy tax withholding obligations upon the vesting of restricted stock units. This net settlement was approved by the board of directors of the Issuer pursuant to Rule 16b-3 under the Securities Exchange Act of 1934, as amended.

Key Figures

Shares withheld for tax withholding obligations: 3,442 shares Reference value per share for withheld shares: $19.26 per share Shares held after transaction: 85,667 shares

3 metrics

Shares withheld for tax withholding obligations 3,442 shares Class A Common Stock withheld on September 1, 2026

Reference value per share for withheld shares $19.26 per share Value used for the 3,442 withheld shares

Shares held after transaction 85,667 shares Direct holdings of the COO after the September 1, 2026 transaction

Key Terms

restricted stock units, tax withholding obligations, Rule 16b-3

3 terms

restricted stock units financial

"upon the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"withheld to satisfy tax withholding obligations upon the vesting"

Rule 16b-3 regulatory

"approved by the board of directors of the Issuer pursuant to Rule 16b-3"

Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.

FAQ

What insider transaction did HMH’s Chief Operations Officer report on this Form 4 for HMH?

The Chief Operations Officer, E. Charls Chauviere, reported a withholding of 3,442 shares of HMH Class A common stock on September 1, 2026 to satisfy tax withholding obligations arising from the vesting of restricted stock units.

Was the HMH COO’s Form 4 transaction a market sale of HMH stock?

No. The filing states the 3,442 shares were withheld to satisfy tax withholding obligations upon vesting of restricted stock units, rather than being sold in an open-market transaction.

What price per share was used for the HMH COO’s tax-withholding shares?

The Form 4 reports a reference value of $19.26 per share for the 3,442 shares of HMH Class A common stock that were withheld to cover tax withholding obligations on September 1, 2026.

How many HMH shares does the COO hold after this reported transaction?

After the tax-withholding disposition of 3,442 shares, the Chief Operations Officer directly holds 85,667 shares of HMH Class A common stock, as reported in the Form 4.

Was the HMH COO’s tax-withholding transaction approved under Rule 16b-3?

Yes. The footnote explains that the net settlement for the 3,442 withheld shares was approved by the board of directors pursuant to Rule 16b-3 under the Securities Exchange Act of 1934.

Was the HMH COO’s Form 4 transaction made under a Rule 10b5-1 trading plan?

No. The document-level indicator for Rule 10b5-1 trading plans is unchecked, and there is no footnote stating that the 3,442-share tax-withholding transaction was executed under a Rule 10b5-1 plan.

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Available on EDGAR 09/03/2026 - 02:17 PM Accepted by SEC EDGAR 09/03/2026 - 02:16 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

CHAUVIERE E CHARLS

(Last) (First) (Middle)

3300 NORTH SAM HOUSTON PARKWAY EAST

(Street)

HOUSTON TEXAS 77032

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
HMH Holding Inc [ HMH ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operations Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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
Class A Common Stock	09/01/2026		F		3,442(1)	D	$19.26	85,667	D

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Represents shares of Class A common stock, par value $0.01 per share of the Issuer withheld to satisfy tax withholding obligations upon the vesting of restricted stock units. This net settlement was approved by the board of directors of the Issuer pursuant to Rule 16b-3 under the Securities Exchange Act of 1934, as amended.

Remarks:

	/s/ Dwight W. Rettig, Attorney-in-Fact	09/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)