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Immuneering Corp

IMRX Net buying
CIK 0001790340 #3449 in the set updated 19 Sep 2026
Bought (120 mo)
$19.51M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$3.91M
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$3.91M
13 of 13 sales
Net
+$15.60M
+$15.60M against sales at will

By person

15 insiders · 78 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Feinberg Peter
Director
$5.20M (16)
+$5.20M
407,648
$1.86M
CARPENTER ROBERT J
Director
$4.88M (1)
+$4.88M
1,148,839
$5.24M
+89.4%
Cormorant Asset Management, LP entity
10% owner
$8.25M (1)
$3.91M (13)
+$4.34M
5,147,901
$23.48M
+22.4%
Zeskind Benjamin J.
PRESIDENT AND CEO
$254.46K (8)
+$254.46K
2,860,179
$13.05M
+4.2%
Schall Thomas J.
Director
$232.49K (4)
+$232.49K
74,530
$339.98K
BERMAN ANN E
Director
$214.34K (3)
+$214.34K
67,465
$307.76K
KEATING LAURIE
Director
$140.00K (2)
+$140.00K
14,000
$63.86K
Hall Brett Matthew
CHIEF SCIENTIFIC OFFICER
$128.78K (8)
+$128.78K
382,531
$1.74M
Amin Biren
CFO, TREASURER
$67.05K (2)
+$67.05K
7,898
$36.03K
Brakewood Harold Eugene
Chief Business Officer
$39.81K (3)
+$39.81K
11,050
$50.41K
Bookman Michael
CHIEF LEGAL OFFICER, SECRETARY
$32.88K (3)
+$32.88K
4,870
$22.22K
Neufeld Leah R
CHIEF PEOPLE OFFICER
$29.50K (4)
+$29.50K
29,598
$135.02K
HAUSMAN DIANA
Director
$19.86K (2)
+$19.86K
5,500
$25.09K
Barrett Scott
CHIEF MEDICAL OFFICER
$16.74K (2)
+$16.74K
7,563
$34.50K
Morales Mallory
SVP Finance, CAO
$5.93K (3)
+$5.93K
27,533
$125.60K
+1,031%

No percentages here. This company's share count has moved by a factor of 2.2 over the window, from 29,841,883 to 64,697,219 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Zeskind Benjamin J.
23 Jun 2026
PRESIDENT AND CEO
Buy
2,400
$4.56
$10.95K
Hall Brett Matthew
15 Jun 2026
CHIEF SCIENTIFIC OFFICER
Buy
6,035
$4.15
$25.05K
Brakewood Harold Eugene
16 Jan 2026
Chief Business Officer
Buy
5,250
$4.76
$24.99K
Hall Brett Matthew
15 Jan 2026
CHIEF SCIENTIFIC OFFICER
Buy
2,298
$4.57
$10.50K
Schall Thomas J.
15 Jan 2026
Director
Buy
21,645
$4.67
$101.04K
Neufeld Leah R
13 Jan 2026
CHIEF PEOPLE OFFICER
Buy
2,626
$4.15
$10.91K
Feinberg Peter
12 Jan 2026
Director
Buy indirect
20,000
$4.35
$86.90K
Feinberg Peter
3 Oct 2025
Director
Buy
7,500
$6.67
$50.03K
Bookman Michael
1 Oct 2025
CHIEF LEGAL OFFICER, SECRETARY
Buy
1,020
$6.83
$6.97K
Neufeld Leah R
1 Oct 2025
CHIEF PEOPLE OFFICER
Buy
800
$6.38
$5.10K
Morales Mallory
1 Oct 2025
Chief Accounting Officer
Buy
300
$6.39
$1.92K
Feinberg Peter
30 Sep 2025
Director
Buy
7,500
$7.03
$52.73K
Feinberg Peter
29 Sep 2025
Director
Buy
5,000
$7.18
$35.90K
Zeskind Benjamin J.
2 Jul 2025
PRESIDENT AND CEO
Buy
7,015
$3.53
$24.79K
Neufeld Leah R
2 Jul 2025
CHIEF PEOPLE OFFICER
Buy
700
$3.57
$2.50K
HAUSMAN DIANA
2 Jul 2025
Director
Buy indirect
3,000
$3.62
$10.87K
HAUSMAN DIANA
2 Jul 2025
Director
Buy
2,500
$3.60
$8.99K
Zeskind Benjamin J.
1 Jul 2025
PRESIDENT AND CEO
Buy
2,985
$3.38
$10.09K
Schall Thomas J.
27 Jun 2025
Director
Buy
9,500
$3.66
$34.79K
Hall Brett Matthew
23 Jun 2025
CHIEF SCIENTIFIC OFFICER
Buy
6,007
$2.43
$14.60K
Brakewood Harold Eugene
20 Jun 2025
Chief Business Officer
Buy
1,900
$2.53
$4.80K
Hall Brett Matthew
20 Jun 2025
CHIEF SCIENTIFIC OFFICER
Buy
7,415
$2.70
$20.02K
Zeskind Benjamin J.
18 Jun 2025
PRESIDENT AND CEO
Buy
21,000
$2.39
$50.14K
Feinberg Peter
18 Jun 2025
Director
Buy
25,000
$2.53
$63.19K
Schall Thomas J.
17 Jun 2025
Director
Buy
40,485
$2.21
$89.28K
Cormorant Asset Management, LP
1 Apr 2024
10% owner
Sell indirect
398,600
$2.90
$1.16M
Cormorant Asset Management, LP
1 Apr 2024
10% owner
Sell indirect
280
$2.97
$831.60
Cormorant Asset Management, LP
1 Apr 2024
10% owner
Sell indirect
10
$2.98
$29.80
Cormorant Asset Management, LP
1 Apr 2024
10% owner
Sell indirect
10
$3.01
$30.10
Cormorant Asset Management, LP
1 Apr 2024
10% owner
Sell indirect
600
$3.03
$1.82K
Cormorant Asset Management, LP
1 Apr 2024
10% owner
Sell indirect
100
$3.05
$305.00
Cormorant Asset Management, LP
1 Apr 2024
10% owner
Sell indirect
300
$3.07
$919.50
Cormorant Asset Management, LP
1 Apr 2024
10% owner
Sell indirect
100
$3.07
$307.00
Morales Mallory
22 Mar 2024
Chief Accounting Officer
Buy
393
$2.55
$1.00K
Brakewood Harold Eugene
22 Mar 2024
Chief Business Officer
Buy
3,900
$2.57
$10.02K
Feinberg Peter
22 Mar 2024
Director
Buy
25,000
$2.55
$63.71K
Schall Thomas J.
22 Mar 2024
Director
Buy
2,900
$2.55
$7.38K
Morales Mallory
21 Mar 2024
Chief Accounting Officer
Buy
1,107
$2.72
$3.01K
Hall Brett Matthew
20 Mar 2024
CHIEF SCIENTIFIC OFFICER
Buy
7,000
$2.86
$20.02K
Neufeld Leah R
20 Mar 2024
CHIEF PEOPLE OFFICER
Buy
3,818
$2.88
$10.99K
Zeskind Benjamin J.
19 Mar 2024
PRESIDENT AND CEO
Buy
20,000
$2.77
$55.33K
Feinberg Peter
19 Mar 2024
Director
Buy
25,000
$2.56
$64.00K
Feinberg Peter
18 Mar 2024
Director
Buy
4,976
$3.05
$15.20K
Feinberg Peter
18 Mar 2024
Director
Buy
45,024
$2.31
$103.86K
BERMAN ANN E
18 Mar 2024
Director
Buy
57,965
$2.13
$123.44K
Cormorant Asset Management, LP
15 Mar 2024
10% owner
Sell indirect
400,000
$2.14
$856.40K
Cormorant Asset Management, LP
14 Mar 2024
10% owner
Sell indirect
11,040
$5.97
$65.89K
Cormorant Asset Management, LP
14 Mar 2024
10% owner
Sell indirect
54,215
$5.37
$291.35K
Cormorant Asset Management, LP
14 Mar 2024
10% owner
Sell indirect
98,570
$4.25
$418.43K
Cormorant Asset Management, LP
14 Mar 2024
10% owner
Sell indirect
345,266
$3.24
$1.12M
Zeskind Benjamin J.
22 Dec 2022
PRESIDENT AND CEO
Exercised, kept
2,500
$3.01
$7.53K
Hall Brett Matthew
25 May 2022
CHIEF SCIENTIFIC OFFICER
Buy
2,551
$3.92
$10.00K
Bookman Michael
17 May 2022
GENERAL COUNSEL AND SECRETARY
Buy
1,000
$4.88
$4.88K
KEATING LAURIE
16 May 2022
Director
Buy
7,000
$5.00
$35.00K
Amin Biren
12 May 2022
CFO, TREASURER
Buy
1,000
$4.42
$4.42K
Zeskind Benjamin J.
12 Apr 2022
PRESIDENT AND CEO
Exercised, kept
2,000
$3.01
$6.02K
Hall Brett Matthew
23 Mar 2022
CHIEF SCIENTIFIC OFFICER
Buy
1,050
$7.91
$8.31K
Zeskind Benjamin J.
23 Mar 2022
PRESIDENT AND CEO
Buy
3,000
$8.02
$24.06K
Barrett Scott
22 Mar 2022
CHIEF MEDICAL OFFICER
Buy
900
$7.49
$6.74K
BERMAN ANN E
15 Mar 2022
Director
Buy
6,000
$6.40
$38.40K
Feinberg Peter
15 Mar 2022
Director
Buy
6,667
$6.75
$45.00K
Zeskind Benjamin J.
28 Feb 2022
PRESIDENT AND CEO
Exercised, kept
2,000
$3.01
$6.02K
Feinberg Peter
20 Sep 2021
Director
Buy
4,750
$24.45
$116.11K
Zeskind Benjamin J.
13 Sep 2021
PRESIDENT AND CEO
Buy
2,083
$22.87
$47.63K
Feinberg Peter
13 Sep 2021
Director
Buy
349
$21.25
$7.42K
Feinberg Peter
13 Sep 2021
Director
Buy indirect
5,750
$21.51
$123.70K
Amin Biren
3 Aug 2021
CFO, Treasurer
Buy
4,175
$15.00
$62.63K
Barrett Scott
3 Aug 2021
Chief Medical Officer
Buy
667
$15.00
$10.01K
BERMAN ANN E
3 Aug 2021
Director
Buy
3,500
$15.00
$52.50K
Bookman Michael
3 Aug 2021
General Counsel and Secretary
Buy
1,402
$15.00
$21.03K
CARPENTER ROBERT J
3 Aug 2021
Director
Buy
325,000
$15.00
$4.88M
Hall Brett Matthew
3 Aug 2021
Chief Scientific Officer
Buy
1,353
$15.00
$20.30K
KEATING LAURIE
3 Aug 2021
Director
Buy
7,000
$15.00
$105.00K
Zeskind Benjamin J.
3 Aug 2021
President and CEO
Buy
2,098
$15.00
$31.47K
Feinberg Peter
3 Aug 2021
Director
Buy indirect
33,333
$15.00
$500.00K
Feinberg Peter
3 Aug 2021
Director
Buy indirect
129,167
$15.00
$1.94M
Feinberg Peter
3 Aug 2021
Director
Buy indirect
129,167
$15.00
$1.94M
Cormorant Asset Management, LP
3 Aug 2021
Former 10% Owner
Buy indirect
550,000
$15.00
$8.25M

What was left out

Form 4 filings counted 143
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 3
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 13
Transactions with no price 0
Shares from compensation/vesting 2,718,177
History held since 30 Jul 2021