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Public ownership evidence

OmniAb, Inc. Common Stock (OABI) Ownership Disclosures

Read OABI insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-14T02:54:47.600Z

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2026-08-042026-08-01Nwachuku Amechi EkekeA800,000Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-08-01 and its public availability date is 2026-08-04. Subtracting those calendar dates gives 3 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0002144074-26-000006 ↗13F 0001999371-26-018943 ↗13F 0001999371-26-018686 ↗

Recent Form 4 activity

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2026-08-042026-08-01Nwachuku Amechi EkekeA800,000Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Advisors Asset Management, Inc.2022-12-312026-08-2835,346$127,246None
Advisors Asset Management, Inc.2023-06-302026-08-2734,550$173,787None
Advisors Asset Management, Inc.2023-09-302026-08-2733,906$175,972None
Advisors Asset Management, Inc.2023-03-312026-08-2734,789$128,024None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-251,515$3,727None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-253,727$1,515,000None
Arbiter Partners Capital Management LLC2026-06-302026-08-20192,585$473,759None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2012,357$30,399None
SEI INVESTMENTS CO2026-06-302026-08-1551,563$126,850None
SEI INVESTMENTS CO2026-06-302026-08-151,827$4,494None
JPL Wealth Management, LLC2026-06-302026-08-157$18None
Quarry LP2026-06-302026-08-15317$780None
ADAR1 Capital Management, LLC2026-06-302026-08-15947,412$2,330,634None
XTX Topco Ltd2026-06-302026-08-1573,907$181,811None
TLS Advisors LLC2026-06-302026-08-15220,685$542,885None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15966,877$2,378,517None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15966,877$2,378,517None
Qube Research & Technologies Ltd2026-06-302026-08-1520,186$49,658None
IFG Advisory, LLC2026-06-302026-08-15190$468None
Shay Capital LLC2026-06-302026-08-1551,500$126,690None
OSAIC HOLDINGS, INC.2026-06-302026-08-1515,459$38,028None
Squarepoint Ops LLC2026-06-302026-08-1535,357$86,978None
MetLife Investment Management, LLC2026-06-302026-08-1565,744$161,730None
JANE STREET GROUP, LLC2026-06-302026-08-1513,200$32,472Call
Legal & General Group Plc2026-06-302026-08-1511,284$27,759None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1535,691$87,800None
CADIAN CAPITAL MANAGEMENT, LP2026-06-302026-08-154,211,821$10,361,080None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15474,159$864,306None
Thrivent Financial for Lutherans2026-06-302026-08-1533,865$83,000None
Thrivent Financial for Lutherans2026-06-302026-08-1521,477$53,000None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15586$1,442None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1529$71None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15156,177$384,195None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15717$1,764None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15205$504None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-152$5None
MANUFACTURERS LIFE INSURANCE COMPANY, THE2026-06-302026-08-1524,785$60,971None
ROYAL BANK OF CANADA2026-06-302026-08-153,303$8,000None
ROYAL BANK OF CANADA2026-06-302026-08-151,915$5,000None
ALLIANCEBERNSTEIN L.P.2026-06-302026-08-15155,992$244,907None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-15198,900$489,294None
CANADA PENSION PLAN INVESTMENT BOARD2026-06-302026-08-1515,100$37,146None
D. E. Shaw & Co., Inc.2026-06-302026-08-15512,549$1,260,871None
D. E. Shaw & Co., Inc.2026-06-302026-08-1546,855$115,263None
CITADEL ADVISORS LLC2026-06-302026-08-1533,700$82,902Call
CITADEL ADVISORS LLC2026-06-302026-08-1558,190$143,147None
Larson Financial Group LLC2026-06-302026-08-151,444$3,552None
Whitefort Capital Management, LP2026-06-302026-08-1510,248,658$25,211,699None
Invesco Ltd.2026-06-302026-08-15104,230$256,406None
Invesco Ltd.2026-06-302026-08-15282$694None

90-day public filing window, up to 50 source positions.

Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗Arbiter Partners Capital Management LLC ↗MERCER GLOBAL ADVISORS INC /ADV ↗SEI INVESTMENTS CO ↗SEI INVESTMENTS CO ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.