[Form 4] GRAHAM CORP Insider Trading Activity

Rhea-AI Filing Summary

Gregorio Mauro, a director of Graham Corporation (GHM), purchased 1,200 shares of GHM common stock on 09/12/2025 at a price of $49.01 per share, and after the transaction beneficially owned 1,200 shares directly. The filing also reports 936 restricted stock units granted under the 2020 Equity Incentive Plan that convert one-for-one into common stock and, unless otherwise provided, vest on 09/02/2026.

The Form 4 was signed by an attorney-in-fact on 09/15/2025. All details reported are limited to the non-derivative purchase and the outstanding restricted stock units described in the filing.

Positive

• Director purchase disclosed: Gregorio Mauro acquired 1,200 shares on 09/12/2025 at $49.01, showing personal investment.
• Equity compensation transparency: 936 restricted stock units from the 2020 Equity Incentive Plan are disclosed with a clear vesting date of 09/02/2026.

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: A director-made open-market purchase and outstanding RSUs show continued equity alignment without clear materiality.

The director purchase of 1,200 shares at $49.01 is a direct acquisition, indicating personal investment in the issuer. The report also discloses 936 RSUs that convert to common stock and vest on 09/02/2026, reflecting normal equity compensation under the 2020 plan. There is no indication of disposal or unusual derivative activity. The filing is routine disclosure under Section 16 and does not by itself signal a governance concern.

Securities Analyst

TL;DR: Insider buying is a modest positive signal but likely immaterial to valuation absent additional context.

The acquisition of 1,200 shares at $49.01 increases the director's direct stake to 1,200 shares; without company market-cap context, the purchase size appears modest. The 936 RSUs provide future dilution timing (vesting 09/02/2026) and are grant-plan based, exempt under Rule 16b-3. There are no derivative exercises or large transfers reported that would materially affect share count beyond the disclosed RSUs.

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^*

Gregorio Mauro

(Last) (First) (Middle)

C/O GRAHAM CORPORATION

20 FLORENCE AVENUE

(Street)

BATAVIA NY 14020

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GRAHAM CORP [ GHM ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
09/12/2025

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

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

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

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
Common Stock	09/12/2025		P		1,200	A	$49.01	1,200	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
Restricted Stock Units	$0(1)							(1)	(1)	Common Stock	936		936	D

Explanation of Responses:

1. These restricted stock units, which convert into common stock on a one-for-one basis, were granted under the 2020 Graham Corporation Equity Incentive Plan in a transaction exempt under Rule 16b-3 and, except as otherwise provided in the award notice, vest on 9/2/2026.

	/s/ Christina McLeod, Attorney-in-Fact for Mauro Gregorio	09/15/2025
	** 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.

FAQ

What transaction did GHM director Gregorio Mauro report on Form 4?

The Form 4 reports a purchase of 1,200 shares of GHM common stock on 09/12/2025 at $49.01 per share.

How many GHM shares does Mauro beneficially own after the reported transaction?

After the transaction Mauro beneficially owned 1,200 shares directly, as reported on the Form 4.

Are there any outstanding equity awards reported for Mauro at GHM?

Yes. The filing reports 936 restricted stock units granted under the 2020 Equity Incentive Plan that convert one-for-one to common stock and vest on 09/02/2026.

Who signed the Form 4 for Gregorio Mauro and when was it filed?

The Form 4 was signed by Christina McLeod, Attorney-in-Fact for Mauro Gregorio on 09/15/2025.

Was the reported purchase an open-market transaction or part of a plan?

The filing lists the transaction code as P, indicating a purchase; no contract or 10b5-1 plan notation is provided in the form text.