$OABIW

$0.39 +$0.15 (61.46%) Close

$OABIW Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 145.4M shares outstanding

Who owns OABIW?

By type of holder

Institutions 40.4% Insiders 5.8% Everyone else 53.8%

Concentration Top 10 holders own 32.7%

Whitefort Capital Management, LP 7.1% · BlackRock, Inc. 6.1%

Institutional ownership

40.4%

+1.9 pts vs last qtr

Institutional holders

129

+2 vs last qtr

Net shares bought

+2.8M

by institutions in Q2 2026

New / sold out

21 / 19

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Nomura Holdings Inc +4.3M
BlackRock, Inc. +790.6K

Biggest sellers in Q2 2026

Whitefort Capital Management, LP −4.0M
Dimensional Fund Advisors LP −483.1K

Who is planning to sell?

Notices of proposed sale, last 12 months

$197K

9 notices from 3 people

Shares covered

113.2K

0.08% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Foehr Matthew W Officer $90.2K
Gustafson Kurt A Officer $68.9K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2021–FY2025

+37.6%

+8.30% a year

Each share's claim on the business

−27.3%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $95.5M

over 5 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years57% 1–3 years23% Under 1 year20%

Quarterly turnover

12.6%

of institutional shares changed hands

Top 10 managers, median time held

3.5 years

Super Investors

Investment managers reporting OABIW on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
WC Whitefort Capital Management, LP	10.2M	7.05%	−4.0M (−27.9%)	2025	6.2%
Shares held by quarter Peak holding14.2M (Q3'25) Change over 8 quarters+10.2M Share of the company7.050% Whitefort Capital Management, LP's full portfolio →
B BlackRock, Inc.	8.9M	6.12%	+790.6K (+9.8%)	2022	0.0%
Shares held by quarter Peak holding8.9M (Q2'26) Change over 8 quarters+1.7M Share of the company6.120% BlackRock, Inc.'s full portfolio →

Whitefort Capital Management, LP

10.2M

% of company

7.05%

Change vs last qtr

−4.0M (−27.9%)

Held since

2025

BlackRock, Inc.

8.9M

% of company

6.12%

Change vs last qtr

+790.6K (+9.8%)

Held since

2022

28 more super investors behind a free account

See every manager holding OmniAb, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting OABIW on Form N-PORT; together they hold 11.9% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IR iShares Russell 2000 ETF iShares Trust	$6.88M	2.8M	1.92%	0.01%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$5.85M	2.4M	1.64%	0.00%	June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$6.88M

% of company

1.92%

% of the fund

0.01%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$5.85M

% of company

1.64%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding OmniAb, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
FM Foehr Matthew W Insider	4.4M	3.04%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company3.040% Foehr Matthew W's insider activity →
HJ Higgins John L Insider	3.0M	2.04%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company2.040% Higgins John L's insider activity →

Foehr Matthew W

Insider

4.4M

% of company

3.04%

Change vs last qtr

—

Held since

—

Higgins John L

Insider

3.0M

% of company

2.04%

Change vs last qtr

—

Held since

—

7 more holders behind a free account

See every insider and 5%+ holder of OmniAb, Inc..

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