Form 4 for IMRX Immuneering Corp

Accepted 2025-09-17 00:00:00 ET · period of report 2025-09-15 · accession 0001790340-25-000111 · 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
	2025-09-17	2025-09-15	IMRX	Hall Brett Matthew	CSO	A - Grant	$1.43	+14.9K	374.2K	+4%	+$21.3K

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	Class A Common Stock	2025-09-15	A	A	14,880	$1.43	374,198	D	—	—	(F1) The reporting person is voluntarily reporting the acquisition of shares of the issuer's Class A Common Stock pursuant to the Immuneering Corporation 2021 Employee Stock Purchase Plan (the "ESPP"), for the ESPP purchase period of March 16, 2025 through September 15, 2025. This transaction is also exempt pursuant to Rule 16b-3(c) promulgated pursuant to the Securities Exchange Act of 1934. (F2) The relevant Offering Period (as defined in the ESPP) ended, and the shares were acquired, on the Purchase Date (as defined in the ESPP) of September 15, 2025. (F3) In accordance with the ESPP, the shares were purchased at a price not less than eighty-five percent (85%) of the Fair Market Value (as defined in the ESPP) of a share of Class A Common Stock on the Enrollment Date (as defined in the ESPP) of the relevant Offering Period.