Insider files Form 144: IBRX (NASDAQ: IBRX) plans sale of 159,478 shares

Rhea-AI Filing Summary

The issuer reports a proposed resale of 159,478 common shares related to an exercise of stock options to be settled for cash on 07/01/2026. The filing also records recent 10b5-1 sales of 95,722 shares and 1,000 shares on 06/29/2026 and 06/30/2026, respectively, with proceeds shown.

Key Figures

Proposed resale: 159,478 shares 10b5-1 sale: 95,722 shares 10b5-1 sale: 1,000 shares

3 metrics

Proposed resale 159,478 shares exercise of stock options, <date>07/01/2026</date>

10b5-1 sale 95,722 shares sale on <date>06/29/2026</date>, proceeds $862,212.63

10b5-1 sale 1,000 shares sale on <date>06/30/2026</date>, proceeds $9,000.00

Key Terms

Form 144, 10b5-1, Exercise of Stock Options

3 terms

Form 144 regulatory

"Notice of proposed sale of restricted or control securities"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

10b5-1 regulatory

"Listed as "10b5-1 Sales" for Christobel Selecky"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Exercise of Stock Options financial

"Securities To Be Sold — Exercise of Stock Options — Cash settlement"

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Available on EDGAR 07/01/2026 - 04:30 PM Accepted by SEC EDGAR 07/01/2026 - 04:29 PM Learn about SEC filing dates

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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	159478	1396229.89	1047353977	07/01/2026	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	07/01/2026	Exercise of Stock Options	Issuer			159478	07/01/2026	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
10b5-1 Sales for CHRISTOBEL SELECKY 3530 John Hopkins Court San Diego CA 92121	Common	06/30/2026	1000	9000.00
10b5-1 Sales for CHRISTOBEL SELECKY 3530 John Hopkins Court San Diego CA 92121	Common	06/29/2026	95722	862212.63

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)

FAQ

What does IBRX's Form 144 report?

It notifies a proposed sale of 159,478 shares. The filing ties that amount to an exercise of stock options with cash settlement on 07/01/2026. It also lists recent 10b5-1 sales of 95,722 and 1,000 shares on June 29 and 30, 2026.

Who executed recent 10b5-1 sales noted in the filing?

Christobel Selecky is named as the 10b5-1 seller for the two recent transactions. The filing shows sales of 95,722 shares for $862,212.63 and 1,000 shares for $9,000 on the dates provided.

Are the 159,478 shares being sold already sold or proposed?

They are proposed for resale. The Form 144 indicates the shares relate to an exercise of stock options and are listed for sale with a cash settlement method on 07/01/2026, rather than recorded as completed sales in the filing.

How much cash did the recent 10b5-1 sales generate?

Combined proceeds shown total $871,212.63. The filing lists proceeds of $862,212.63 from the 95,722-share sale and $9,000.00 from the 1,000-share sale on the stated dates in June 2026.