ANAB insider plans sale under Rule 144 notice

AnaptysBio (symbol ANAB) disclosed a planned insider sale of common stock under Rule 144.

Accepted by SEC EDGAR 01/09/2026 - 07:14 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

AnaptysBio (symbol ANAB) disclosed a planned insider sale of common stock under Rule 144. The notice covers 2,515 shares of common stock to be sold through Morgan Stanley Smith Barney LLC on NASDAQ, with an aggregate market value of 113,703.15. These shares come from restricted stock units acquired from the issuer on 01/08/2026, with cash as the form of payment.

The filing also lists recent sales by Dennis Mulroy over the prior three months. These include 1,908 shares sold on 01/07/2026 for 83,780.28, 3,363 shares on 01/05/2026 for 1,511,166.85, 10,000 shares on 12/22/2025 for 500,000, and 15,725 shares on 12/16/2025 for 705,333.1. The Rule 144 representation confirms the seller states they are not aware of undisclosed material adverse information about the issuer.

FAQ

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

What does the ANAB Form 144 filing disclose?

The filing discloses a planned sale of 2,515 shares of ANAB common stock under Rule 144, to be sold through Morgan Stanley Smith Barney LLC on NASDAQ, with an aggregate market value of 113,703.15.

Who is selling ANAB shares in this Form 144 notice?

The Form 144 lists Dennis Mulroy as the person for whose account ANAB common shares are to be sold, and it provides his address and recent sale history.

What is the source of the 2,515 ANAB shares to be sold?

The 2,515 shares come from restricted stock units of ANAB common stock acquired from the issuer on 01/08/2026, with the consideration described as cash.

What recent ANAB stock sales by Dennis Mulroy are reported?

The filing reports sales of 1,908 shares on 01/07/2026 for 83,780.28, 3,363 shares on 01/05/2026 for 1,511,166.85, 10,000 shares on 12/22/2025 for 500,000, and 15,725 shares on 12/16/2025 for 705,333.1.

How many ANAB shares are outstanding as referenced in the filing?

The Form 144 indicates there are 27,688,470 ANAB common shares outstanding, which serves as a baseline figure relative to the 2,515 shares covered by this notice.

What representation does the seller make in the ANAB Form 144?

The seller represents that they do not know any material adverse information about ANAB’s current or prospective operations that has not been publicly disclosed, consistent with Rule 144 requirements.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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	0001276840
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	ANAPTYSBIO, INC
SEC File Number	001-37985
Address of Issuer	10770 WATERIDGE CIRCLE, SUITE 210 SAN DIEGO CALIFORNIA 94005
Phone	858-362-6295
Name of Person for Whose Account the Securities are To Be Sold	DENNIS MULROY
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 Stock	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	2515	113703.15	27688470	01/08/2026	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	01/08/2026	Restricted Stock Units	Issuer			2515	01/08/2026	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
Dennis Mulroy 10770 Wateridge Circle, Suite 210 San Diego CA 92121	Common	01/07/2026	1908	83780.28
Dennis Mulroy 10770 Wateridge Circle, Suite 210 San Diego CA 92121	Common	01/05/2026	3363	1511166.85
Dennis Mulroy 10770 Wateridge Circle, Suite 210 San Diego CA 92121	Common	12/22/2025	10000	500000
Dennis Mulroy 10770 Wateridge Circle, Suite 210 San Diego CA 92121	Common	12/16/2025	15725	705333.1

144: Remarks and Signature

Remarks
Date of Notice	01/09/2026
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/ Dennis Mulroy
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)