OABI insider plans Rule 144 stock sales

OABI insider Kurt A. Gustafson filed a notice of proposed sales under Rule 144 for common stock.

Accepted by SEC EDGAR 02/17/2026 - 04:27 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

OABI insider Kurt A. Gustafson filed a notice of proposed sales under Rule 144 for common stock. The filing lists planned sales of 6,891 and 9,173 shares of common stock through Morgan Stanley Smith Barney on NASDAQ on 02/17/2026 and 02/18/2026, with aggregate market values of $11,714.70 and $15,594.10. The issuer had 143,955,400 shares of common stock outstanding. The shares to be sold were acquired as restricted stock compensation, including 13,542 shares on 02/16/2026 and 18,750 shares on 02/18/2026. The filing also notes a prior sale of 23,922 common shares on 12/08/2025 for gross proceeds of $46,909.73.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing for OABI disclose?

The Form 144 discloses planned sales of OABI common stock by Kurt A. Gustafson. It details two proposed NASDAQ sales totaling 16,064 shares, their aggregate market values, how the shares were acquired as restricted stock compensation, and prior sales in the last three months.

How many OABI shares does Kurt A. Gustafson plan to sell under this Form 144?

The filing lists two planned blocks of OABI common stock for sale. These total 6,891 shares and 9,173 shares, to be sold through Morgan Stanley Smith Barney on NASDAQ on 02/17/2026 and 02/18/2026, respectively, with specified aggregate market values.

What are the aggregate market values of the OABI shares to be sold?

The proposed OABI share sales have aggregate market values of $11,714.70 and $15,594.10. These amounts correspond to planned sales of 6,891 and 9,173 common shares on NASDAQ, as disclosed in the Form 144 filing for Kurt A. Gustafson.

How were the OABI shares being sold under Form 144 acquired?

The OABI shares were acquired as restricted stock compensation from the issuer. The filing reports 13,542 common shares acquired on 02/16/2026 and 18,750 common shares acquired on 02/18/2026, both labeled as compensation, forming the basis for the planned Rule 144 sales.

What prior OABI stock sales by Kurt A. Gustafson are disclosed?

The filing reports a prior sale of 23,922 OABI common shares. This transaction occurred on 12/08/2025 and generated gross proceeds of $46,909.73. Form 144 requires disclosure of all issuer securities sold during the past three months for the same selling person.

How many OABI shares were outstanding when the Form 144 was filed?

The filing states that 143,955,400 OABI common shares were outstanding. This figure provides context for the size of the planned sales under Rule 144 relative to the issuer’s total common stock base at the time of the notice.

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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	0001462354
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	OmniAb, Inc.
SEC File Number	001-40720
Address of Issuer	5980 HORTON STREET SUITE 600 EMERYVILLE CALIFORNIA 94608
Phone	510-250-7800
Name of Person for Whose Account the Securities are To Be Sold	GUSTAFSON KURT A
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	Officer

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 SERVICES 200 W CIVIC CENTER DR. 4TH FLOOR SANDY UT 84070	6891	11714.70	143955400	02/17/2026	NASDAQ
COMMON	MORGAN STANLEY SMITH BARNEY LLC EXECUTIVE SERVICES 200 W CIVIC CENTER DR. 4TH FLOOR SANDY UT 84070	9173	15594.10	143955400	02/18/2026	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	02/16/2026	RESTRICTED STOCK	ISSUER			13542	02/16/2026	COMPENSATION
COMMON	02/18/2026	RESTRICTED STOCK	ISSUER			18750	02/18/2026	COMPENSATION

* 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
Kurt A Gustafson 5980 HORTON STREET SUITE 600 EMERYVILLE CA 94608	COMMON	12/08/2025	23922	46909.73

144: Remarks and Signature

Remarks	Represents the number of shares expected to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. These sales are mandated by the Issuer's election under its equity incentive plans to require the satisfaction of a tax withholding obligation to be funded by a sell-to-cover transaction and do not represent discretionary trades by the reporting person.
Date of Notice	02/17/2026
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	/s/ Charles S. Berkman, as Attorney-in-Fact for Kurt A. Gustafson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)