AnaptysBio (NASDAQ: ANAB) CEO logs RSU vesting, tax sale and new option grant

Rhea-AI Filing Summary

AnaptysBio, Inc. reported insider equity activity by President and CEO Daniel Faga. On January 6, 2026, 17,850 restricted stock units (RSUs) were converted into the same number of shares of common stock for no cash consideration. On January 7, 2026, 9,202 shares of common stock were sold at $45.11 per share to cover tax withholding obligations related to RSU vesting, described as a non-discretionary “sell to cover” transaction.

Also on January 6, 2026, Faga received new equity awards consisting of 98,600 RSUs and a stock option for 133,400 shares with an exercise price of $43.91. The RSUs and option awards vest over several years, subject to continued service. After these transactions, Faga beneficially owned 466,787 shares of AnaptysBio common stock directly.

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

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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^*

Faga Daniel

(Last) (First) (Middle)

C/O ANAPTYSBIO, INC.

10770 WATERIDGE CIRCLE, SUITE 210

(Street)

SAN DIEGO CA 92121

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ANAPTYSBIO, INC [ ANAB ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, CEO

3. Date of Earliest Transaction (Month/Day/Year)
01/06/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/06/2026		M		17,850	A	(1)	475,989	D
Common Stock	01/07/2026		S(2)		9,202	D	$45.11	466,787	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	(1)	01/06/2026		M			17,850	(3)	(3)	Common Stock	17,850	$0	17,850	D
Restricted Stock Unit	(1)	01/06/2026		A		98,600		(4)	(4)	Common Stock	98,600	$0	98,600	D
Stock Option (right to buy)	$43.91	01/06/2026		A		133,400		(5)	01/05/2036	Common Stock	133,400	$0	133,400	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") represents a contingent right to receive 1 share of the Issuer's Common Stock upon settlement for no consideration.

2. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

3. The RSUs vests as to 25% of the total RSUs annually commencing on January 6, 2024 until fully vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

4. The RSUs vests as to 25% of the total RSUs annually commencing on January 6, 2027 until fully vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

5. The stock option vests as to 25% of the total shares on January 6, 2027, and thereafter vests as to 1/48 of the total shares monthly until fully vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

	/s/ Eric Loumeau, Attorney-in-Fact	01/08/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did ANAB President and CEO Daniel Faga report?

Daniel Faga reported RSU vesting into 17,850 shares of AnaptysBio common stock on January 6, 2026, a sale of 9,202 shares on January 7, 2026, and new grants of 98,600 RSUs plus a 133,400-share stock option.

Why did the ANAB CEO sell 9,202 shares of common stock?

The sale of 9,202 shares at $45.11 per share was to cover tax withholding obligations arising from the vesting and settlement of RSUs and is described as a non-discretionary “sell to cover” transaction.

How many AnaptysBio shares does the CEO beneficially own after these transactions?

Following the reported transactions, Daniel Faga beneficially owned 466,787 shares of AnaptysBio common stock directly.

What new RSU awards did AnaptysBio grant to its CEO?

On January 6, 2026, Daniel Faga received a new award of 98,600 restricted stock units (RSUs), each representing a contingent right to receive one share of common stock for no consideration, vesting 25% annually starting January 6, 2027.

What are the terms of the new stock option granted to the ANAB CEO?

The stock option covers 133,400 shares of common stock with an exercise price of $43.91 per share. It vests 25% on January 6, 2027, then 1/48 of the total shares monthly until fully vested, subject to continued service.

How do the vested RSUs for the ANAB CEO work?

Each RSU represents a contingent right to receive 1 share of AnaptysBio common stock for no cash consideration upon settlement. One RSU grant vests 25% annually beginning January 6, 2024, and another vests 25% annually beginning January 6, 2027, in each case subject to continued service.

Is the ANAB CEO’s reported share sale considered discretionary trading?

The filing states that the 9,202-share sale was undertaken solely to satisfy tax withholding obligations through a “sell to cover” mechanism and does not represent a discretionary transaction by the reporting person.