OmniAb, Inc. (OABI) COO Nwachuku Amechi Ekeke files initial Form 3 with no trades

Rhea-AI Filing Summary

OmniAb, Inc. officer Nwachuku Amechi Ekeke, the company’s Chief Operating Officer, filed an initial statement of beneficial ownership as a reporting person. The filing lists no reportable transactions and shows no equity holdings or derivative positions currently reported for this individual.

Filing Explained

As of July 13, 2026, the Form 3 records zero disclosed holdings for OmniAb’s COO and reports no issuer transaction in this filing.

The July 13, 2026 Form 3 is an initial beneficial-ownership statement for OmniAb, Inc. that identifies Amechi Ekeke Nwachuku as the reporting person, the chief operating officer, and a person marked as a 10% owner.

The filing states that no securities are beneficially owned and reports no non-derivative or derivative securities in its tables, so this disclosure establishes zero reported holdings for the filer rather than an issuer issuance, sale, or transfer.

For existing common holders, the filing itself shows no ownership or capital-structure change; its effect is limited to recording the reporting person's disclosed zero holdings as of the event date.

Key Figures

Buy transactions: 0 Sell transactions: 0 Net buy/sell shares: 0

3 metrics

Buy transactions 0 buyCount reported in transactionSummary

Sell transactions 0 sellCount reported in transactionSummary

Net buy/sell shares 0 netBuySellShares reported as neutral activity

Key Terms

beneficial ownership, reporting person, derivative positions

3 terms

beneficial ownership regulatory

"initial statement of beneficial ownership as a reporting person"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

reporting person regulatory

"filed an initial statement of beneficial ownership as a reporting person"

derivative positions financial

"shows no equity holdings or derivative positions currently reported"

Derivative positions are contracts that derive their value from an underlying asset—such as a stock, bond, currency or commodity—and include instruments like options, futures and swaps. Think of them as bets or insurance tied to an asset’s future price: they let investors amplify returns, hedge risk or take exposure without owning the asset directly, which can meaningfully increase potential gains, losses and volatility in a portfolio.

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

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FAQ

What does the Form 3 filed for OmniAb, Inc. (OABI) by Nwachuku Amechi Ekeke represent?

The Form 3 is an initial statement of beneficial ownership by Chief Operating Officer Nwachuku Amechi Ekeke, indicating his status as a reporting person for OmniAb, Inc. without listing any current holdings.

Did the OmniAb, Inc. (OABI) Form 3 disclose any stock transactions by Nwachuku Amechi Ekeke?

No. The Form 3 shows no reported transactions, with buyCount, sellCount, and other transaction counts all indicated as 0, reflecting no recent trades tied to this initial filing.

Does Nwachuku Amechi Ekeke report any OmniAb, Inc. (OABI) share ownership on this Form 3?

The summary data indicate no equity or derivative holdings reported, with holdingEntries and derivativeTransactionCount both at 0, meaning no positions are listed at the time of this initial statement.

What is Nwachuku Amechi Ekeke’s role at OmniAb, Inc. (OABI) as shown in the Form 3?

The Form 3 identifies Nwachuku Amechi Ekeke as an officer of OmniAb, Inc., specifically holding the title of Chief Operating Officer, which makes him a reporting person under SEC rules.

Does the OmniAb, Inc. (OABI) Form 3 indicate any net buying or selling by Nwachuku Amechi Ekeke?

No. The transaction summary reports netBuySellShares of 0 and a netBuySellDirection labeled neutral, reflecting the absence of any reported purchases or sales in this filing.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Nwachuku Amechi Ekeke

(Last) (First) (Middle)

5980 HORTON STREET

STE 600

(Street)

EMERYVILLE CALIFORNIA 94608

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
07/13/2026

3. Issuer Name and Ticker or Trading Symbol
OmniAb, Inc. [ OABI ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operating Officer

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities are beneficially owned.

	By: /s/ Charles S. Berkman, Attorney-in-Fact For: Amechi Ekeke Nwachuku	07/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)