Dennis Mulroy files Form 144 to sell 10,000 shares

Dennis Mulroy filed a Form 144 to sell 10,000 shares of Common Stock on 05/19/2026.

Rhea-AI Filing Summary

Dennis Mulroy filed a Form 144 to sell 10,000 shares of Common Stock on 05/19/2026. The excerpt shows the sale is linked to a Stock Option Exercise and lists Morgan Stanley Smith Barney LLC as the brokerage. A prior reported sale of 10,000 shares on 05/15/2026 is shown with proceeds of $632,543.00.

Insights

Equity Capital Markets Analyst

Routine Form 144 notice: executive selling exercised shares.

The filing excerpt records a proposed sale of 10,000 shares tied to a Stock Option Exercise dated 05/19/2026. It lists Morgan Stanley Smith Barney LLC as the broker-dealer and records an aggregate value field of $599,000.00.

Past activity shows a sale of 10,000 shares on 05/15/2026 for $632,543.00. Cash-flow treatment and any transfer restrictions are not detailed in the excerpt; subsequent filings would disclose settlement details.

Key Figures

Shares to be sold: 10,000 shares Aggregate value (line item): $599,000.00 Prior sale - shares: 10,000 shares +2 more

5 metrics

Shares to be sold 10,000 shares Proposed sale dated <date>05/19/2026</date>

Aggregate value (line item) $599,000.00 Amount shown adjacent to 10,000-share line dated <date>05/19/2026</date>

Prior sale - shares 10,000 shares Sale dated <date>05/15/2026</date> shown under past 3 months

Prior sale - proceeds $632,543.00 Amount shown for the 05/15/2026 sale

Broker-dealer Morgan Stanley Smith Barney LLC Listed as brokerage in the excerpt

Key Terms

Form 144, Stock Option Exercise, Securities Sold During The Past 3 Months, Broker-dealer

4 terms

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"Securities To Be Sold | Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

Broker-dealer financial

"Morgan Stanley Smith Barney LLC 1 New York Plaza"

A broker-dealer is a licensed firm or individual that both executes trades on behalf of clients (acting as a broker) and buys or sells securities for its own account (acting as a dealer). Investors care because broker-dealers provide the plumbing of markets — they place orders, hold or move cash and securities, offer research or advice, and their stability and fees directly affect trade execution, costs, and the safety of client funds; think of them as a combined travel agent and taxi for your investments.

FAQ

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

What does ANAB Form 144 filed by Dennis Mulroy report?

It reports a proposed sale of 10,000 shares of Common Stock tied to a Stock Option Exercise on 05/19/2026. The filing names Morgan Stanley Smith Barney LLC as the broker-dealer handling the transaction.

How much value is shown for the 05/19/2026 sale in the excerpt?

The excerpt includes an aggregate value field of $599,000.00 adjacent to the 10,000 shares line dated 05/19/2026. The filing does not state proceeds recipient allocation beyond broker identification.

Does the excerpt show any recent prior sales by the same person?

Yes. It shows a prior sale of 10,000 shares on 05/15/2026 with an indicated amount of $632,543.00. The excerpt labels that row under "Securities Sold During The Past 3 Months."

Who is the broker-dealer listed for the transaction?

Morgan Stanley Smith Barney LLC is listed with an address at 1 New York Plaza, 8th Floor, New York, NY 10004 in the excerpt. The filing ties the sale activity to that broker-dealer.

Is the sale described in the excerpt an open-market sale or related to an option exercise?

The excerpt explicitly states the sale method as a Stock Option Exercise for the 10,000 shares dated 05/19/2026. It does not characterize subsequent disposition methods in the provided text.

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

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Accepted by SEC EDGAR 05/19/2026 - 05:37 PM Learn about SEC filing dates

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 92121
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	10000	599000.00	29100902	05/19/2026	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	05/19/2026	Stock Option Exercise	Issuer			10000	05/19/2026	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	05/15/2026	10000	632543.00

144: Remarks and Signature

Remarks
Date of Notice	05/19/2026
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 Michael Mulroy
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)