AnaptysBio (NASDAQ: ANAB) director Hughes Owen files initial Form 3 insider report

Rhea-AI Filing Summary

ANAPTYSBIO, INC director Hughes Owen filed an initial insider ownership report on Form 3. This filing establishes his status as a company insider under SEC rules. The submission does not list any buy, sell, or other reportable transactions and shows no derivative positions.

Key Terms

Form 3, insider, derivative positions, transaction summary

4 terms

Form 3 regulatory

"filed an initial insider ownership report on Form 3"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

insider regulatory

"This filing establishes his status as a company insider under SEC rules"

derivative positions financial

"shows no derivative positions"

Derivative positions are contracts that derive their value from an underlying asset—such as a stock, bond, currency or commodity—and include instruments like options, futures and swaps. Think of them as bets or insurance tied to an asset’s future price: they let investors amplify returns, hedge risk or take exposure without owning the asset directly, which can meaningfully increase potential gains, losses and volatility in a portfolio.

transaction summary financial

"The transaction summary lists zero purchases, sales, exercises, gifts"

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
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hours per response:			0.5

1. Name and Address of Reporting Person^*

Hughes Owen

(Last) (First) (Middle)

10770 WATERIDGE CIRCLE, SUITE 210

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
05/11/2026

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	/s/ Dan Faga, Attorney-in-Fact	05/13/2026
	** 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 5 (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.
* Form 3: SEC 1473 (03-26)

FAQ

What does the Hughes Owen Form 3 filing for ANAB show?

The Form 3 for ANAPTYSBIO, INC reports that director Hughes Owen is an insider subject to SEC reporting. It does not show any stock purchases, sales, or derivative holdings, and contains no reported transactions.

Did Hughes Owen buy or sell ANAB shares in this Form 3?

No, the Form 3 for ANAPTYSBIO, INC shows no buy or sell activity. The transaction summary lists zero purchases, sales, exercises, gifts, tax withholdings, or restructurings, indicating only an initial insider status filing.

Does the ANAB Form 3 for Hughes Owen include derivative securities?

No, the Form 3 lists no derivative securities for Hughes Owen. The derivative summary is empty and the transaction summary shows zero derivative transactions or exercises, so no options or similar instruments are disclosed here.

What is the purpose of the ANAB Form 3 filed by Hughes Owen?

The Form 3 formally identifies Hughes Owen as a director and insider of ANAPTYSBIO, INC. This triggers ongoing Section 16 reporting obligations, even though this specific filing contains no reportable transactions or derivative positions.

Are there any holdings or positions detailed in the ANAB Form 3?

The provided Form 3 data for ANAPTYSBIO, INC does not list specific holdings. It only shows that there are no reported transactions, no derivative positions, and that Hughes Owen is a director subject to insider reporting rules.