STOCK TITAN

Immuneering (IMRX) CEO buys 2,400 shares in open-market trade

Filing Impact
(Neutral)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Immuneering Corp director and CEO Benjamin J. Zeskind reported buying 2,400 shares of Class A Common Stock in an open-market purchase on June 23, 2026 at a weighted average price of $4.5617 per share, with individual trade prices ranging from $4.55 to $4.59 through a broker-dealer.

After this transaction, he directly owns 2,315,252 shares of Immuneering’s Class A Common Stock. A separate entry shows 894,927 shares held indirectly by the Benjamin J. Zeskind 2020 Family Trust, where his spouse Lisa Schwartz serves as sole trustee.

Positive

  • None.

Negative

  • None.
Insider Zeskind Benjamin J.
Role PRESIDENT AND CEO
Bought 2,400 shs ($11K)
Type Security Shares Price Value
Purchase Class A Common Stock 2,400 $4.5617 $11K
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 2,315,252 shares (Direct, null); Class A Common Stock — 894,927 shares (Indirect, See Foonote)
Footnotes (1)
  1. This transaction was executed in multiple trades through a broker-dealer at prices ranging from $4.55 to $4.59. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares acquired at each price. Held by the Benjamin J. Zeskind 2020 Family Trust, where Lisa Schwartz, Dr. Zeskind's spouse, serves as sole trustee.
Shares purchased 2,400 shares Class A Common Stock, open-market on June 23, 2026
Weighted average purchase price $4.5617 per share Open-market trades between $4.55 and $4.59
Direct holdings after transaction 2,315,252 shares Class A Common Stock held directly by CEO
Indirect trust holdings 894,927 shares Held by Benjamin J. Zeskind 2020 Family Trust
open-market purchase financial
"purchased 2,400 Immuneering Class A Common shares at a weighted average price in an open-market transaction"
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
weighted average purchase price financial
"The price reported in this column reflects the weighted average purchase price."
The weighted average purchase price is the average cost per share you paid across multiple buys, calculated so larger purchases count more than smaller ones. Imagine buying apples at different prices: the overall price you effectively paid depends on how many apples you bought at each price. Investors use it to measure true cost basis, calculate gains or losses, decide when to sell, and manage taxes and portfolio performance.
broker-dealer financial
"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $4.55 to $4.59."
A broker-dealer is a licensed firm or individual that both executes trades on behalf of clients (acting as a broker) and buys or sells securities for its own account (acting as a dealer). Investors care because broker-dealers provide the plumbing of markets — they place orders, hold or move cash and securities, offer research or advice, and their stability and fees directly affect trade execution, costs, and the safety of client funds; think of them as a combined travel agent and taxi for your investments.
Family Trust financial
"Held by the Benjamin J. Zeskind 2020 Family Trust, where Lisa Schwartz, Dr. Zeskind's spouse, serves as sole trustee."
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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Zeskind Benjamin J.

(Last)(First)(Middle)
245 MAIN STREET
SECOND FLOOR

(Street)
CAMBRIDGE MASSACHUSETTS 02142

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Immuneering Corp [ IMRX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
PRESIDENT AND CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/23/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Common Stock06/23/2026P2,400A$4.5617(1)2,315,252D
Class A Common Stock894,927ISee Foonote(2)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. This transaction was executed in multiple trades through a broker-dealer at prices ranging from $4.55 to $4.59. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares acquired at each price.
2. Held by the Benjamin J. Zeskind 2020 Family Trust, where Lisa Schwartz, Dr. Zeskind's spouse, serves as sole trustee.
Remarks:
/s/ Michael D. Bookman, Attorney-in-Fact for Benjamin J. Zeskind06/24/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Immuneering (IMRX) report for CEO Benjamin Zeskind?

Immuneering reported that CEO Benjamin J. Zeskind bought 2,400 shares of Class A Common Stock. The shares were acquired in an open-market transaction on June 23, 2026, as disclosed in a Form 4 insider trading report.

How many Immuneering (IMRX) shares did the CEO purchase and at what price?

Benjamin J. Zeskind purchased 2,400 Immuneering Class A Common shares at a weighted average price of $4.5617 per share. The filing notes multiple trades executed between $4.55 and $4.59 through a broker-dealer.

What are Benjamin Zeskind’s direct Immuneering (IMRX) holdings after this Form 4 transaction?

Following the reported purchase, Benjamin J. Zeskind directly holds 2,315,252 shares of Immuneering’s Class A Common Stock. This figure reflects his direct ownership after the 2,400-share open-market acquisition on June 23, 2026.

What indirect Immuneering (IMRX) holdings are reported for Benjamin Zeskind?

The Form 4 shows 894,927 Immuneering Class A shares held indirectly by the Benjamin J. Zeskind 2020 Family Trust. The filing explains that Lisa Schwartz, Dr. Zeskind’s spouse, serves as the sole trustee of this family trust.

How was the weighted average purchase price calculated for the Immuneering (IMRX) insider trade?

The weighted average purchase price of $4.5617 per share reflects multiple trades executed between $4.55 and $4.59. The filing states that full trade-by-trade details are available from the reporting person upon request by SEC staff.