Form 4 for GHM GRAHAM CORP

Accepted 2026-06-08 16:31:16 ET · period of report 2026-06-04 · accession 0000891839-26-000237 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2026-06-08 16:31	2026-06-04	GHM	Thome Christopher J.	CFO, VP-Fin	M - OptEx	$0.00	+1,643	31.2K	+6%	$0
D	2026-06-08 16:31	2026-06-04	GHM	Thome Christopher J.	CFO, VP-Fin	F - Tax	$107.96	-608	30.6K	-2%	-$65.6K
D	2026-06-08 16:31	2026-06-04	GHM	Thome Christopher J.	CFO, VP-Fin	M - OptEx	$0.00	-1,643	1,644	-50%	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-06-04	M	A	1,643	$0.00	31,170	D	—	—	(F1) These restricted stock units convert into common stock on a one-for-one basis ("RSUs").
2	Common	Common Stock	2026-06-04	F	D	608	$107.96	30,562	D	—	—	(F2) Shares withheld to cover tax withholding obligations upon the vesting of RSUs.
3	Derivative	Restricted Stock Units	2026-06-04	M	D	1,643	$0.00	1,644	D	$0.00 · — to —	1,643 Common Stock	(F1) These restricted stock units convert into common stock on a one-for-one basis ("RSUs"). (F3) Two-thirds of the original grant of these RSUs vested in substantially equal installments on each of 6/4/2025 and 6/4/2026, and except as otherwise provided in the award notice, the balance vests on 6/4/2027. (F3) Two-thirds of the original grant of these RSUs vested in substantially equal installments on each of 6/4/2025 and 6/4/2026, and except as otherwise provided in the award notice, the balance vests on 6/4/2027.