Company · Ownership research

Immuneering Corp IMRX

CIK 0001790340

Form 4 transactions dated Nov 1, 2023 to Nov 11, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Nov 9, 2026.

Insider purchases & sales

Purchased: $1.23M
Sold: $3.91M

Nov 1, 2023 – Nov 9, 2026
Available records · partial months are marked ·

202510 of 18 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Oct 3, 2025	Feinberg Peter Director	Purchase	$50.02K 7,500 shares bought	5.02% added Direct holding	▾
Oct 1, 2025	Morales Mallory Chief Accounting Officer	Purchase	$1.92K 300 shares bought	1.10% added Direct holding	▾
Oct 1, 2025	Neufeld Leah R CHIEF PEOPLE OFFICER	Purchase	$5.10K 800 shares bought	3.55% added Direct holding	▾
Oct 1, 2025	Bookman Michael CHIEF LEGAL OFFICER, SECRETARY	Purchase	$6.97K 1,020 shares bought	26.49% added Direct holding	▾
Sep 30, 2025	Feinberg Peter Director	Purchase	$52.73K 7,500 shares bought	5.29% added Direct holding	▾
Sep 29, 2025	Feinberg Peter Director	Purchase	$35.90K 5,000 shares bought	3.66% added Direct holding	▾
Jul 2, 2025	HAUSMAN DIANA Director	Purchase	$8.99K 2,500 shares bought	New holding Direct holding	▾
Jul 2, 2025	HAUSMAN DIANA Director	Purchase	$10.87K 3,000 shares bought	New holding Indirect holding	▾
Jul 2, 2025	Neufeld Leah R CHIEF PEOPLE OFFICER	Purchase	$2.50K 700 shares bought	6.98% added Direct holding	▾
Jul 2, 2025	Zeskind Benjamin J. PRESIDENT AND CEO · Director · 10% owner	Purchase	$24.79K 7,015 shares bought	0.30% added Direct holding	▾

Showing 18 / 18 record groups in 2025. The complete set is available through the API.

Immuneering Corp · IMRX

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 18 of 18 purchase / sale groups and 20 of 20 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"IMRX","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.