Quick Takeaways
- IMRX - Immuneering Corp has 16 insiders with reported activity on this page.
- Net insider value flow over the last year: +$721,042.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 16 Insiders of Immuneering Corp
- Symbol
- IMRX on Nasdaq
- Location
- Cambridge, MA
What Changed
- Buy value: $721,042; sell value: $0.
- Net share flow: +201,446.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$721,042.
Buys
$721,042
Shares: 201,446
Insiders: 9
Sells
$0
Shares: 0
Insiders: 0
Net
+$721,042
Shares: +201,446
Insiders: 9
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 31,819 | 0 | $147,439 | $0 | +$147,439 |
| 3-6 | 20,000 | 0 | $86,904 | $0 | +$86,904 |
| 6-9 | 22,120 | 0 | $152,642 | $0 | +$152,642 |
| 9-12 | 127,507 | 0 | $334,058 | $0 | +$334,058 |
Immuneering Corp executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Benjamin J. Zeskind | PRESIDENT AND CEO, Director | $9,928,137 | +$85,023 | +0.86% | Mixed | 03 Feb 2026 |
| Cormorant Asset Management, LP | 10%+ Owner | $8,598,961 | Filing P/S | 01 Apr 2024 | ||
| Peter Feinberg | Director | $6,947,380 | +$288,747 | +4.3% | Mixed | 12 Jan 2026 |
| Brett Matthew Hall | Chief Scientific Officer | $1,720,586 | +$45,118 | +2.7% | Filing P/S | 03 Feb 2026 |
| Thomas J. Schall | Director | $347,913 | +$225,107 | +183% | Filing P/S | 15 Jan 2026 |
| Mallory Morales | SVP Finance, CAO | $175,935 | +$1,917 | +1.1% | Filing P/S | 03 Feb 2026 |
| Leah R. Neufeld | Chief People Officer | $145,918 | +$18,508 | +15% | Mixed | 13 Mar 2026 |
| Harold E. Brakewood | Chief Business Officer | $52,598 | +$29,794 | +131% | Filing P/S | 03 Feb 2026 |
| Michael D. Bookman | Chief Legal Officer, Secretary | $33,261 | +$6,966 | +26% | Filing P/S | 03 Feb 2026 |
| Biren Amin | Cfo, Treasurer | $23,773 | Mixed | 12 May 2022 | ||
| Diana F. Hausman | Director | $19,862 | +$19,863 | +100% | Filing P/S | 02 Jul 2025 |
| Laurie B. Keating | Director | Mixed | 01 Jan 2026 | |||
| CARPENTER ROBERT J | Director | Mixed | 13 Jun 2025 | |||
| Igor Matushansky | Chief Medical Officer | Mixed | 03 Feb 2026 | |||
| Ann E. Berman | Director | Mixed | 13 Jun 2025 | |||
| Scott Barrett | Chief Medical Officer | Mixed | 15 Feb 2023 |
Top shareholders of Immuneering Corp (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| FMR LLC |
13D/G
13F
|
Company |
14%
|
8,787,052
|
$71,526,603 | $0 | 30 Sep 2025 | |
| HBM Healthcare Investments (Cayman) Ltd. |
13D/G
|
— |
5.7%
|
3,646,304
|
$29,680,915 | $0 | 26 Sep 2025 | |
| Benjamin J. Zeskind |
13D/G
3/4/5
|
PRESIDENT AND CEO, Director |
6.6%
|
4,357,807
|
$28,674,370 | +$2,498,025 | 31 Dec 2025 | |
| Empery Asset Management, LP |
13D/G
13F
|
Company |
5%
|
3,250,775
|
$20,154,805 | -$12,015,476 | 31 Dec 2025 | |
| Sanofi |
13F
|
Company |
4.1%
|
2,708,559
|
$17,822,318 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
3.9%
|
2,568,293
|
$16,899,368 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
3.6%
|
2,402,238
|
$15,806,726 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
3%
|
1,993,958
|
$13,121,000 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
2.2%
|
1,451,706
|
$9,552,225 | — | 31 Dec 2025 | |
| Cormorant Asset Management, LP |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
2,895,273
|
$8,598,961 | — | 01 Apr 2024 | |
| Peter Feinberg |
3/4/5
|
Director |
—
mixed-class rows
|
1,168,952
mixed-class rows
|
$6,947,380 | +$288,747 | 12 Jan 2026 | |
| MARSHALL WACE, LLP |
13F
|
Company |
1.1%
|
711,875
|
$4,684,136 | — | 31 Dec 2025 | |
| Blue Owl Capital Holdings LP |
13F
|
Company |
1%
|
665,000
|
$4,375,700 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.94%
|
618,074
|
$4,068,348 | — | 31 Dec 2025 | |
| Occam Crest Management LP |
13F
|
Company |
0.75%
|
498,498
|
$3,280,117 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.74%
|
489,617
|
$3,221,679 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.48%
|
318,809
|
$2,097,763 | — | 31 Dec 2025 | |
| Burkehill Global Management, LP |
13F
|
Company |
0.45%
|
300,000
|
$1,974,000 | — | 31 Dec 2025 | |
| SOUTHPORT MANAGEMENT, L.L.C. |
13F
|
Company |
0.42%
|
277,501
|
$1,825,957 | — | 31 Dec 2025 | |
| Brett Matthew Hall |
3/4/5
|
CHIEF SCIENTIFIC OFFICER |
—
mixed-class rows
|
720,496
mixed-class rows
|
$1,720,586 | +$45,118 | 03 Feb 2026 | |
| Diametric Capital, LP |
13F
|
Company |
0.37%
|
246,857
|
$1,624,319 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.35%
|
230,726
|
$1,518,177 | — | 31 Dec 2025 | |
| DCF Advisers, LLC |
13F
|
Company |
0.33%
|
215,000
|
$1,414,700 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.32%
|
214,341
|
$1,410,364 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.31%
|
207,155
|
$1,363,080 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.29%
|
190,333
|
$1,252,391 | — | 31 Dec 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.25%
|
165,875
|
$1,091,458 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.23%
|
152,300
|
$1,002,134 | — | 31 Dec 2025 | |
| 683 Capital Management, LLC |
13F
|
Company |
0.23%
|
150,697
|
$991,586 | — | 31 Dec 2025 | |
| Woodline Partners LP |
13F
|
Company |
0.23%
|
150,000
|
$987,000 | — | 31 Dec 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
0.2%
|
132,680
|
$873,034 | — | 31 Dec 2025 | |
| Rafferty Asset Management, LLC |
13F
|
Company |
0.2%
|
130,742
|
$860,282 | — | 31 Dec 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.18%
|
120,449
|
$792,554 | — | 31 Dec 2025 | |
| Kingsview Wealth Management, LLC |
13F
|
Company |
0.18%
|
118,600
|
$780,388 | — | 31 Dec 2025 | |
| TD ASSET MANAGEMENT INC |
13F
|
Company |
0.18%
|
117,846
|
$775,427 | — | 31 Dec 2025 | |
| HighTower Advisors, LLC |
13F
|
Company |
0.17%
|
111,324
|
$732,512 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.17%
|
109,061
|
$717,621 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.16%
|
107,472
|
$707,166 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.15%
|
102,034
|
$671,383 | — | 31 Dec 2025 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.14%
|
92,256
|
$607,044 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.14%
|
90,459
|
$595,221 | — | 31 Dec 2025 | |
| Hudson Bay Capital Management LP |
13F
|
Company |
0.13%
|
84,973
|
$559,122 | — | 31 Dec 2025 | |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. |
13F
|
Company |
0.12%
|
82,349
|
$541,857 | — | 31 Dec 2025 | |
| PRELUDE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.12%
|
80,000
|
$526,400 | — | 31 Dec 2025 | |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE |
13F
|
Company |
0.11%
|
69,738
|
$469,164 | — | 31 Dec 2025 | |
| Palumbo Wealth Management LLC |
13F
|
Company |
0.1%
|
63,273
|
$416,337 | — | 31 Dec 2025 | |
| Thomas J. Schall |
3/4/5
|
Director |
—
mixed-class rows
|
107,880
mixed-class rows
|
$347,913 | +$225,107 | 15 Jan 2026 | |
| FOX RUN MANAGEMENT, L.L.C. |
13F
|
Company |
0.08%
|
51,773
|
$340,666 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.08%
|
50,923
|
$335,073 | — | 31 Dec 2025 | |
| OMERS ADMINISTRATION Corp |
13F
|
Company |
0.07%
|
47,800
|
$314,524 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for Immuneering Corp
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Leah R. Neufeld | IMRX | Class A Common Stock | Award | 14% | 3,628 | 29,598 | 13 Mar 2026 | Direct | ||
| Michael D. Bookman | IMRX | Stock Option | Award | 176,000 | 176,000 | 03 Feb 2026 | Direct | |||
| Harold E. Brakewood | IMRX | Stock Option | Award | 140,000 | 140,000 | 03 Feb 2026 | Direct | |||
| Brett Matthew Hall | IMRX | Stock Option | Award | 344,000 | 344,000 | 03 Feb 2026 | Direct | |||
| Mallory Morales | IMRX | Stock Option | Award | 140,000 | 140,000 | 03 Feb 2026 | Direct | |||
| Leah R. Neufeld | IMRX | Stock Option | Award | 140,000 | 140,000 | 03 Feb 2026 | Direct | |||
| Benjamin J. Zeskind | IMRX | Stock Option | Award | 688,000 | 688,000 | 03 Feb 2026 | Direct | |||
| Igor Matushansky | IMRX | Stock Option | Award | 140,000 | 140,000 | 03 Feb 2026 | Direct | |||
| Harold E. Brakewood | IMRX | Class A Common Stock | Purchase | 90.5% | $24,990 | $4.76 | 5,250 | 11,050 | 16 Jan 2026 | Direct |
| Thomas J. Schall | IMRX | Class A Common Stock | Purchase | 40.9% | $101,041 | $4.67 | 21,645 | 74,530 | 15 Jan 2026 | Direct |
| Brett Matthew Hall | IMRX | Class A Common Stock | Purchase | 0.61% | $10,502 | $4.57 | 2,298 | 376,496 | 15 Jan 2026 | Direct |
| Leah R. Neufeld | IMRX | Class A Common Stock | Purchase | 11.2% | $10,906 | $4.15 | 2,626 | 25,970 | 13 Jan 2026 | Direct |
| Peter Feinberg | IMRX | Class A Common Stock | Purchase | 17.3% | $86,904 | $4.35 | 20,000 | 135,441 | 12 Jan 2026 | General Partner of S4K Investments LLC. |
| Laurie B. Keating | IMRX | Stock Option | Award | 7,888 | 7,888 | 01 Jan 2026 | Direct | |||
| Peter Feinberg | IMRX | Stock Option | Award | 7,888 | 7,888 | 01 Jan 2026 | Direct | |||
| Peter Feinberg | IMRX | Class A Common Stock | Purchase | 5.02% | $50,025 | $6.67 | 7,500 | 156,766 | 03 Oct 2025 | Direct |
| Mallory Morales | IMRX | Class A Common Stock | Purchase | 1.1% | $1,917 | $6.39 | 300 | 27,533 | 01 Oct 2025 | Direct |
| Leah R. Neufeld | IMRX | Class A Common Stock | Purchase | 3.55% | $5,103 | $6.38 | 800 | 23,344 | 01 Oct 2025 | Direct |
| Michael D. Bookman | IMRX | Class A Common Stock | Purchase | 26.5% | $6,966 | $6.83 | 1,020 | 4,870 | 01 Oct 2025 | Direct |
| Peter Feinberg | IMRX | Class A Common Stock | Purchase | 5.29% | $52,730 | $7.03 | 7,500 | 149,266 | 30 Sep 2025 | Direct |
| Peter Feinberg | IMRX | Class A Common Stock | Purchase | 3.66% | $35,900 | $7.18 | 5,000 | 141,766 | 29 Sep 2025 | Direct |
| Leah R. Neufeld | IMRX | Class A Common Stock | Award | 110.1% | 11,815 | 22,544 | 15 Sep 2025 | Direct | ||
| Mallory Morales | IMRX | Class A Common Stock | Award | 113.8% | 14,497 | 27,233 | 15 Sep 2025 | Direct | ||
| Brett Matthew Hall | IMRX | Class A Common Stock | Award | 4.14% | 14,880 | 374,198 | 15 Sep 2025 | Direct | ||
| Diana F. Hausman | IMRX | Class A Common Stock | Purchase | $10,874 | $3.62 | 3,000 | 3,000 | 02 Jul 2025 | By spouse | |
| Diana F. Hausman | IMRX | Class A Common Stock | Purchase | $8,989 | $3.60 | 2,500 | 2,500 | 02 Jul 2025 | Direct | |
| Leah R. Neufeld | IMRX | Class A Common Stock | Purchase | 6.98% | $2,499 | $3.57 | 700 | 10,729 | 02 Jul 2025 | Direct |
| Benjamin J. Zeskind | IMRX | Class A Common Stock | Purchase | 0.3% | $24,792 | $3.53 | 7,015 | 2,312,852 | 02 Jul 2025 | Direct |
| Benjamin J. Zeskind | IMRX | Class A Common Stock | Purchase | 0.13% | $10,087 | $3.38 | 2,985 | 2,305,837 | 01 Jul 2025 | Direct |
| Thomas J. Schall | IMRX | Class A Common Stock | Purchase | 21.9% | $34,788 | $3.66 | 9,500 | 52,885 | 27 Jun 2025 | Direct |
| Brett Matthew Hall | IMRX | Class A Common Stock | Purchase | 1.7% | $14,596 | $2.43 | 6,007 | 359,318 | 23 Jun 2025 | Direct |
| Brett Matthew Hall | IMRX | Class A Common Stock | Purchase | 2.14% | $20,020 | $2.70 | 7,415 | 353,311 | 20 Jun 2025 | Direct |
| Harold E. Brakewood | IMRX | Class A Common Stock | Purchase | 48.7% | $4,804 | $2.53 | 1,900 | 5,800 | 20 Jun 2025 | Direct |
| Peter Feinberg | IMRX | Class A Common Stock | Purchase | 22.4% | $63,188 | $2.53 | 25,000 | 136,766 | 18 Jun 2025 | Direct |
| Benjamin J. Zeskind | IMRX | Class A Common Stock | Purchase | 0.92% | $50,144 | $2.39 | 21,000 | 2,302,852 | 18 Jun 2025 | Direct |
| Thomas J. Schall | IMRX | Class A Common Stock | Purchase | 1396% | $89,278 | $2.21 | 40,485 | 43,385 | 17 Jun 2025 | Direct |
| Diana F. Hausman | IMRX | Stock Option | Award | 33,350 | 33,350 | 13 Jun 2025 | Direct | |||
| Thomas J. Schall | IMRX | Stock Option | Award | 33,350 | 33,350 | 13 Jun 2025 | Direct | |||
| Laurie B. Keating | IMRX | Stock Option | Award | 33,350 | 33,350 | 13 Jun 2025 | Direct | |||
| Peter Feinberg | IMRX | Stock Option | Award | 33,350 | 33,350 | 13 Jun 2025 | Direct | |||
| Carpenter Robert J | IMRX | Stock Option | Award | 33,350 | 33,350 | 13 Jun 2025 | Direct | |||
| Ann E. Berman | IMRX | Stock Option | Award | 33,350 | 33,350 | 13 Jun 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.