Form 4: GUSTAFSON KURT A reports multiple insider transactions in OABI

Q: Was the OmniAb (OABI) CFO’s stock sale a discretionary trade?

The filing states the sale was not discretionary . The 6,828 shares were sold under a mandated “sell-to-cover” arrangement to satisfy tax withholding obligations arising from the vesting of Restricted Stock Units.

Q: How many OmniAb (OABI) shares does the CFO own after these transactions?

After the reported transactions, the CFO directly owns 259,402 shares of OmniAb common stock. He also holds 83,334 Restricted Stock Units , each representing a contingent right to receive one share of common stock in the future.

Q: What RSU activity did OmniAb (OABI) disclose for its CFO on February 16, 2026?

On February 16, 2026, 13,542 Restricted Stock Units vested for the CFO and were converted into the same number of OmniAb common shares at an exercise price of $0 , as part of a multi-year vesting schedule starting February 16, 2025.

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

GUSTAFSON KURT A reported multiple insider transaction types in a Form 4 filing for OABI. The filing lists transactions totaling 33,912 shares at a weighted average price of $1.70 per share. Following the reported transactions, holdings were 259,402 shares.

Insider Trade Summary

Net Seller: 6,828 shares ($11,608)

Net Sell 3 txns

Insider GUSTAFSON KURT A

Role Executive VP, Finance and CFO

Sold 6,828 shs ($12K)

Type	Security	Shares	Price	Value
Sale	Common Stock	6,828	$1.70	$12K
Exercise	Restricted Stock Units	13,542	$0.00	--
Exercise	Common Stock	13,542	$0.00	--

Holdings After Transaction: Common Stock — 259,402 shares (Direct); Restricted Stock Units — 83,334 shares (Direct)

Footnotes (1)

Represents the vesting of an RSU grant which occurs in three substantially equal annual installments beginning on February 16, 2025. Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock. Represents the number of shares required 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.68 to $1.79. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Form 4 Insider Transactions: What Each Field Means →

02/17/2026 - 06:20 PM

SEC Form 4

FORM 4

UNITED 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^*

GUSTAFSON KURT A

(Last)

(First)

(Middle)

5980 HORTON STREET, STE 600

(Street)

EMERYVILLE

94608

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
OmniAb, Inc. [ OABI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Executive VP, Finance and CFO

3. Date of Earliest Transaction (Month/Day/Year)
02/16/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	02/16/2026		M		13,542⁽¹⁾	A	$0⁽²⁾	266,230	D
Common Stock	02/17/2026		S		6,828⁽³⁾	D	$1.7⁽⁴⁾	259,402	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	$0⁽²⁾	02/16/2026		M			13,542	⁽¹⁾	⁽¹⁾	Common Stock	13,542	$0	83,334	D

Explanation of Responses:

1. Represents the vesting of an RSU grant which occurs in three substantially equal annual installments beginning on February 16, 2025.

2. Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

3. Represents the number of shares required 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.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.68 to $1.79. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Remarks:

	By: /s/ Charles S. Berkman, Attorney-in-Fact For: Kurt A. Gustafson	02/17/2026
	** Signature of Reporting Person	Date
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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did OmniAb (OABI) report for CFO Kurt A. Gustafson?

OmniAb’s CFO reported RSU vesting and a related share sale. 13,542 RSUs vested into common stock on February 16, 2026, and 6,828 shares were sold the next day to cover tax withholding tied to that vesting.

How many OmniAb (OABI) shares did the CFO sell and at what price?

The CFO sold 6,828 OmniAb common shares in an open-market transaction. The weighted average sale price was $1.70 per share, with individual trades occurring between $1.68 and $1.79, as disclosed in the footnotes.

Was the OmniAb (OABI) CFO’s stock sale a discretionary trade?

The filing states the sale was not discretionary. The 6,828 shares were sold under a mandated “sell-to-cover” arrangement to satisfy tax withholding obligations arising from the vesting of Restricted Stock Units.

How many OmniAb (OABI) shares does the CFO own after these transactions?

After the reported transactions, the CFO directly owns 259,402 shares of OmniAb common stock. He also holds 83,334 Restricted Stock Units, each representing a contingent right to receive one share of common stock in the future.

What RSU activity did OmniAb (OABI) disclose for its CFO on February 16, 2026?

On February 16, 2026, 13,542 Restricted Stock Units vested for the CFO and were converted into the same number of OmniAb common shares at an exercise price of $0, as part of a multi-year vesting schedule starting February 16, 2025.

How are the OmniAb (OABI) CFO’s RSUs structured according to the filing?

The filing notes the RSU grant vests in three substantially equal annual installments beginning on February 16, 2025. Each RSU represents a contingent right to receive one share of OmniAb common stock when it vests.