Magda Marquet - 15 Jan 2026 Form 4 Insider Report for ANAPTYSBIO, INC (ANAB)

Reporting relationship: Director
Issuer ticker: ANAB
Reported as of: 15 Jan 2026
Net transaction value: -$243,321
SEC form: 4
Accepted by SEC: 16 Jan 2026, 13:05:05 UTC
Prior SEC filing: 08 Jan 2026
Next SEC filing: 01 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Eric Loumeau, Attorney-in-Fact

Key filing fact

Magda Marquet filed Form 4 for ANAPTYSBIO, INC (ANAB) on 16 Jan 2026.

Key facts

This page summarizes Magda Marquet's Form 4 filing for ANAPTYSBIO, INC (ANAB).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 16 Jan 2026, 13:05.

Change

Previous filing in this sequence was filed on 08 Jan 2026.
Current net transaction value: -$243,321.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001631486 Primary reporting owner

Marquet Magda

Relationship: Director
Address: C/O ANAPTYSBIO, INC., 10770 WATERIDGE CIRCLE, SUITE 210, SAN DIEGO
Signature: /s/ Eric Loumeau, Attorney-in-Fact
Signature date: 16 Jan 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ANAB transaction

Common Stock

Options Exercise

Transaction value: $287,210
Shares: +11,000
Change %: +111%
Price: $26.11
Shares after: 20,930
Date: 15 Jan 2026
Ownership: Direct

ANAB transaction

Common Stock

Sale

Transaction value: $446,999
Shares: -9,290
Change %: -44%
Price: $48.12
Shares after: 11,640
Date: 15 Jan 2026
Ownership: Direct
Footnotes: F1

ANAB transaction

Common Stock

Sale

Transaction value: $83,532
Shares: -1,710
Change %: -15%
Price: $48.85
Shares after: 9,930
Date: 15 Jan 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ANAB transaction Derivative

Stock Option (right to buy)

Options Exercise

Transaction value: $0
Shares: -11,000
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 15 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 11,000
Exercise price: $26.11
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.595 to $48.54 per share, inclusive. The Reporting Person undertakes to provide to 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.

Footnote F2

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.625 to $48.88 per share, inclusive. The Reporting Person undertakes to provide to 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.

Footnote F3

The stock option is fully vested.

Footnote F4

In addition to the options to purchase shares of common stock as set forth in Table II, the Reporting Person also holds additional options to purchase up to an aggregate of 70,104 shares of common stock, which options vest according to their terms.