Insider at IMNM (NASDAQ: IMNM) plans sale of 90,616 shares

Rhea-AI Filing Summary

Alfred K. Horn submitted a notice to sell up to 90,616 shares of IMNM common stock through Fidelity Brokerage Services LLC on 08/04/2026 in connection with a stock option exercise. During the prior three months, he sold 1,092 shares of common stock for an aggregate amount of 27,300.00 on 07/07/2026.

Key Figures

Planned shares to be sold: 90,616 shares Aggregate value of planned sale: 2,274,006.85 Shares sold in prior 3 months: 1,092 shares +1 more

4 metrics

Planned shares to be sold 90,616 shares Common stock to be sold on 08/04/2026 via Fidelity Brokerage Services LLC

Aggregate value of planned sale 2,274,006.85 Value associated with 90,616 common shares listed for NASDAQ

Shares sold in prior 3 months 1,092 shares Common stock sold on 07/07/2026

Amount from prior sale 27,300.00 Aggregate amount for 1,092 shares sold on 07/07/2026

Key Terms

Stock Option Exercise, Common, Securities Sold During The Past 3 Months, Fidelity Brokerage Services LLC

4 terms

Stock Option Exercise financial

"Common | 08/04/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Common financial

"Common | Fidelity Brokerage Services LLC 900 Salem Street"

Securities Sold During The Past 3 Months financial

"144: Securities Sold During The Past 3 Months"

Fidelity Brokerage Services LLC financial

"Common | Fidelity Brokerage Services LLC 900 Salem Street"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/04/2026 - 04:33 PM Accepted by SEC EDGAR 08/04/2026 - 04:32 PM Learn about SEC filing dates

FAQ

What does the Form 144 for IMNM disclose about planned share sales?

The notice reports that Alfred K. Horn plans to sell up to 90,616 IMNM common shares through Fidelity Brokerage Services LLC on 08/04/2026 in connection with a stock option exercise.

How many IMNM shares are covered by Alfred K. Horn’s planned sale?

The planned transaction covers up to 90,616 shares of IMNM common stock. These shares are linked to a stock option exercise and are to be sold through Fidelity Brokerage Services LLC on 08/04/2026.

What is the reported value of the IMNM shares in the planned Form 144 sale?

The planned sale lists an aggregate value of 2,274,006.85 for the 90,616 IMNM common shares. This figure appears in the securities information section alongside the share amount and NASDAQ listing detail.

What IMNM stock transactions occurred in the last three months for this insider?

In the preceding three months, 1,092 IMNM common shares were sold on 07/07/2026 for a total amount of 27,300.00. This past transaction is disclosed in the section covering securities sold during the past three months.

Which brokerage is handling Alfred K. Horn’s planned IMNM share sale?

The planned sale of 90,616 IMNM common shares is to be executed through Fidelity Brokerage Services LLC, located at 900 Salem Street, Smithfield, RI 02917, as disclosed in the securities information section.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	90616	2274006.85	113250394	08/04/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/04/2026	Stock Option Exercise	Issuer			90616	08/04/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Alfred K. Horn 18702 N. Creek Parkway, Suite 100 Bothell WA 98011	Common	07/07/2026	1092	27300.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)