Brett Matthew Hall

CIK: 0001870437

Transaction Breakdown

Open Market Buys (P)4 (57.1%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (42.9%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

IMRX

Immuneering Corp

Officer

Discretionary Trading P&L

Holdings

Transaction History (7 total)

IMRX
Immuneering Corp
Jun 15, 2026
Purchase(P)
Direct
6K shares at avg. $4.15$25K
IMRX
Immuneering Corp
Feb 3, 2026
Award(A)
Stock Option
Direct
344K shares-
IMRX
Immuneering Corp
Jan 15, 2026
Purchase(P)
Direct
2.3K shares at avg. $4.57$11K
IMRX
Immuneering Corp
Sep 15, 2025
Award(A)
Direct
14.9K shares at avg. $1.43$21K
IMRX
Immuneering Corp
Jun 23, 2025
Purchase(P)
Direct
6K shares at avg. $2.43$15K
IMRX
Immuneering Corp
Jun 20, 2025
Purchase(P)
Direct
7.4K shares at avg. $2.70$20K
IMRX
Immuneering Corp
Feb 5, 2025
Award(A)
Stock Option
Direct
240K shares-

		Type	Shares	Price		Ownership
Jun 15, 2026	IMRX Immuneering Corp	Purchase(P)	6,035	$4.15	$25,045	Direct
Feb 3, 2026	IMRX Immuneering Corp	Award(A) Stock Option	344,000	-	-	Direct
Jan 15, 2026	IMRX Immuneering Corp	Purchase(P)	2,298	$4.57	$10,502	Direct
Sep 15, 2025	IMRX Immuneering Corp	Award(A)	14,880	$1.43	$21,249	Direct
Jun 23, 2025	IMRX Immuneering Corp	Purchase(P)	6,007	$2.43	$14,596	Direct
Jun 20, 2025	IMRX Immuneering Corp	Purchase(P)	7,415	$2.70	$20,020	Direct
Feb 5, 2025	IMRX Immuneering Corp	Award(A) Stock Option	240,000	-	-	Direct

1-7 of 7 transactions

About Hall Brett Matthew

Hall Brett Matthew (SEC CIK 0001870437) files insider reports with the SEC as CHIEF SCIENTIFIC OFFICER of Immuneering Corp (IMRX).

Signal8 holds 6 ownership filings by Hall Brett Matthew, all Form 4s, filed between Feb 7, 2025 and Jun 16, 2026. Those filings report 7 transactions, from Feb 5, 2025 to Jun 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Hall Brett Matthew's filings is in CAMBRIDGE, MA.

Recent filings by Hall Brett Matthew

Jun 15, 2026: Open-market purchase of IMRX shares (Form 4, code P).
Feb 3, 2026: Grant or award of IMRX derivative securities (Form 4, code A).
Jan 15, 2026: Open-market purchase of IMRX shares (Form 4, code P).
Sep 15, 2025: Grant or award of IMRX shares (Form 4, code A).
Jun 23, 2025: Open-market purchase of IMRX shares (Form 4, code P).

Other insiders filing for Immuneering Corp (IMRX)

Gengos Andrew, Chief Financial Officer
Zeskind Benjamin J., PRESIDENT AND CEO
Schall Thomas J., Director
HAUSMAN DIANA, Director
CARPENTER ROBERT J, Director
KEATING LAURIE, Director

How to read Form 4 transaction codes