Key facts
- This page summarizes Eric J. Loumeau's Form 4 filing for ANAPTYSBIO, INC (ANAB).
- 8 reported transactions and 3 derivative rows are listed below.
- Accepted by SEC: 08 Jan 2026, 16:12.
Eric J. Loumeau - 06 Jan 2026 Form 4 Insider Report for ANAPTYSBIO, INC (ANAB)
- Reporting relationship
- CHIEF LEGAL OFFICER
- Issuer ticker
- ANAB
- Reported as of
- 06 Jan 2026
- Net transaction value
- -$439,200
- SEC form
- 4
- Accepted by SEC
- 08 Jan 2026, 16:12:40 UTC
- Prior SEC filing
- 06 Jan 2026
- Next SEC filing
- 09 Jan 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Eric Loumeau
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Eric J. Loumeau filed Form 4 for ANAPTYSBIO, INC (ANAB) on 08 Jan 2026.
Change
- Previous filing in this sequence was filed on 06 Jan 2026.
- Current net transaction value: -$439,200.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001239648
Primary reporting owner
LOUMEAU ERIC J
- Relationship
- CHIEF LEGAL OFFICER
- Address
- C/O ANAPTYSBIO, INC., 10770 WATERIDGE CIRCLE, SUITE 210, SAN DIEGO
- Signature
- /s/ Eric Loumeau
- Signature date
- 08 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
- Shares
- +5,545
- Change %
- +42%
- Price
- Shares after
- 18,796
- Date
- 06 Jan 2026
- Ownership
- Direct
- Footnotes
- F1
ANAB
transaction
Common Stock
Sale
- Transaction value
- $90,987
- Shares
- -2,017
- Change %
- -11%
- Price
- $45.11
- Shares after
- 16,779
- Date
- 07 Jan 2026
- Ownership
- Direct
- Footnotes
- F2
ANAB
transaction
Common Stock
Sale
- Transaction value
- $239,672
- Shares
- -5,281
- Change %
- -31%
- Price
- $45.38
- Shares after
- 11,498
- Date
- 07 Jan 2026
- Ownership
- Direct
- Footnotes
- F3, F4
ANAB
transaction
Common Stock
Sale
- Transaction value
- $84,926
- Shares
- -1,841
- Change %
- -16%
- Price
- $46.13
- Shares after
- 9,657
- Date
- 07 Jan 2026
- Ownership
- Direct
- Footnotes
- F3, F5
ANAB
transaction
Common Stock
Sale
- Transaction value
- $23,615
- Shares
- -500
- Change %
- -5.2%
- Price
- $47.23
- Shares after
- 9,157
- Date
- 07 Jan 2026
- Ownership
- Direct
- Footnotes
- F3
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
ANAB
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- $0
- Shares
- -5,545
- Change %
- -50%
- Price
- $0.000000
- Shares after
- 5,545
- Date
- 06 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 5,545
- Exercise price
- Footnotes
- F1, F6
ANAB
transaction
Derivative
Restricted Stock Unit
Award
- Transaction value
- $0
- Shares
- +17,100
- Change %
- Price
- $0.000000
- Shares after
- 17,100
- Date
- 06 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 17,100
- Exercise price
- Footnotes
- F1, F7
ANAB
transaction
Derivative
Stock Option (right to buy)
Award
- Transaction value
- $0
- Shares
- +23,200
- Change %
- Price
- $0.000000
- Shares after
- 23,200
- Date
- 06 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 23,200
- Exercise price
- $43.91
- Footnotes
- F8
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 8 footnotes
Footnote F1
Each restricted stock unit ("RSU") represents a contingent right to receive 1 share of the Issuer's Common Stock upon settlement for no consideration.
Footnote F2
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.
Footnote F3
The transactions reported on this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the reporting person dated April 11, 2025.
Footnote F4
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.87 to $45.835 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 F5
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.96 to $46.83 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 F6
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.
Footnote F7
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.
Footnote F8
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.