Immuneering Corp (IMRX) Insider Ownership

Historic Ownership Trends

Over the 90-day window ending December 12, 2025, Immuneering's three dominant insider ownership positions are held by Director Peter Feinberg (549.01K shares), Chief Accounting Officer Mallory Morales (27.53K shares), Chief People Officer Leah R Neufeld (23.34K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Asset Management, Lp Cormorant 2,895,273 03 Apr, 2024
Benjamin J. Zeskind President And CEO 2,312,852 03 Jul, 2025
Robert J Carpenter 1,148,839 04 Aug, 2021
Peter Feinberg 549,008 07 Oct, 2025
Brett Matthew Hall Chief Scientific Officer 374,198 17 Sep, 2025
Ann E Berman 67,465 19 Mar, 2024
Thomas J. Schall 52,885 30 Jun, 2025
Mallory Morales Chief Accounting Officer 27,533 02 Oct, 2025
Leah R Neufeld Chief People Officer 23,344 02 Oct, 2025
Laurie Keating 14,000 17 May, 2022
Biren Amin CFO And Treasurer 7,898 12 May, 2022
Scott Barrett Chief Medical Officer 7,563 22 Mar, 2022
Harold Eugene Brakewood Chief Business Officer 5,800 24 Jun, 2025
Diana Hausman 5,500 07 Jul, 2025
Michael Bookman Chief Legal Officer And Secretary 4,870 02 Oct, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
03 Oct, 2025 Peter Feinberg Class A Common Stock A 7,500 $6.67 156,766 D P
01 Oct, 2025 Leah R Neufeld Class A Common Stock A 800 $6.38 23,344 D P
01 Oct, 2025 Mallory Morales Class A Common Stock A 300 $6.39 27,533 D P
01 Oct, 2025 Michael Bookman Class A Common Stock A 1,020 $6.83 4,870 D P
30 Sep, 2025 Peter Feinberg Class A Common Stock A 7,500 $7.03 149,266 D P
29 Sep, 2025 Peter Feinberg Class A Common Stock A 5,000 $7.18 141,766 D P
15 Sep, 2025 Brett Matthew Hall - - 374,198 D
15 Sep, 2025 Mallory Morales Class A Common Stock A 14,497 $1.43 27,233 D A
15 Sep, 2025 Leah R Neufeld Class A Common Stock A 11,815 $1.43 22,544 D A
15 Sep, 2025 Brett Matthew Hall Class A Common Stock A 14,880 $1.43 374,198 D A
02 Jul, 2025 Diana Hausman - - 2,500 D
02 Jul, 2025 Leah R Neufeld Class A Common Stock A 700 $3.57 10,729 D P
02 Jul, 2025 Diana Hausman Class A Common Stock A 2,500 $3.60 2,500 D P
02 Jul, 2025 Diana Hausman Class A Common Stock A 3,000 $3.62 3,000 I P
02 Jul, 2025 Diana Hausman - - 3,000 I
01 Jul, 2025 Benjamin J. Zeskind - - 2,305,837 D
01 Jul, 2025 Benjamin J. Zeskind Class A Common Stock A 2,985 $3.38 2,305,837 D P
02 Jul, 2025 Benjamin J. Zeskind Class A Common Stock A 7,015 $3.53 2,312,852 D P
27 Jun, 2025 Thomas J. Schall Class A Common Stock A 9,500 $3.66 52,885 D P
20 Jun, 2025 Harold Eugene Brakewood - - 5,800 D