Amechi Ekeke Nwachuku - 01 Aug 2026 Form 4 Insider Report for OmniAb, Inc. (OABI)

Reporting relationship: Chief Operating Officer
Issuer ticker: OABI
Reported as of: 01 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Aug 2026, 16:06:39 UTC
Prior SEC filing: 13 Jul 2026
Source filing: View source filing
Reporting owner signature: By: /s/ Charles S. Berkman, Attorney-in-Fact For: Amechi Ekeke Nwachuku

Key filing fact

Amechi Ekeke Nwachuku filed Form 4 for OmniAb, Inc. (OABI) on 03 Aug 2026.

Key facts

This page summarizes Amechi Ekeke Nwachuku's Form 4 filing for OmniAb, Inc. (OABI).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 03 Aug 2026, 16:06.

Change

Previous filing in this sequence was filed on 13 Jul 2026.
Current net transaction value: $0.

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 0002144074 Primary reporting owner

Nwachuku Amechi Ekeke

Relationship: Chief Operating Officer
Address: 5980 HORTON STREET, STE 600, EMERYVILLE
Signature: By: /s/ Charles S. Berkman, Attorney-in-Fact For: Amechi Ekeke Nwachuku
Signature date: 03 Aug 2026

Reported derivative securities

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

OABI transaction Derivative

Stock Option (right to buy)

Award

Transaction value
Shares: +800,000
Change %
Price: $0.000000^*
Shares after: 800,000
Date: 01 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 800,000
Exercise price: $1.98
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The Stock Option grant vests and becomes exercisable as to 1/8 of the shares on the six-month anniversary of the grant date and as to 1/48 of the shares each month thereafter for 42 months, beginning on August 1, 2026, subject to the Reporting Person's continued service to the Issuer through each such vesting date.