OmniAb Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:OABI Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
26 Aug 25	BuyUS$999,999	Matthew Foehr	Individual	540,540	US$1.85
15 May 25	BuyUS$45,600	Jennifer Cochran	Individual	30,000	US$1.52
14 May 25	BuyUS$36,500	Steven Love	Individual	25,000	US$1.46
12 May 25	BuyUS$93,600	John Higgins	Individual	65,000	US$1.44
21 Mar 25	BuyUS$9,120	John Higgins	Individual	4,000	US$2.28
20 Mar 25	BuyUS$295,513	John Higgins	Individual	125,750	US$2.35
21 Jan 25	SellUS$135,468	Matthew Foehr	Individual	41,811	US$3.24
21 Jan 25	SellUS$50,304	Kurt Gustafson	Individual	15,526	US$3.24
21 Jan 25	SellUS$82,584	Charles Berkman	Individual	25,489	US$3.24

Insider Trading Volume

Insider Buying: OABI insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of OABI?
Owner Type	Number of Shares	Ownership Percentage
Hedge Funds	10,240,146	7.11%
VC/PE Firms	15,862,815	11%
Individual Insiders	16,966,174	11.8%
Institutions	48,074,756	33.4%
General Public	52,811,509	36.7%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 21.8%.

Top Shareholders

Top 25 shareholders own 55.84% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
11%	Avista Healthcare Partners	15,862,815	US$25.9m	0.28%	100.0%
7.11%	Whitefort Capital Management, LP	10,240,146	US$16.7m	162%	5.17%
5.75%	Robert Goldstein	8,271,347	US$13.5m	52.8%	no data
4.86%	BlackRock, Inc.	7,001,108	US$11.4m	-0.82%	no data
3.66%	The Vanguard Group, Inc.	5,268,315	US$8.6m	1.72%	no data
3.02%	Matthew Foehr	4,341,987	US$7.1m	27.5%	no data
2.02%	Dimensional Fund Advisors LP	2,913,764	US$4.7m	-6.96%	no data
1.82%	Rice Hall James & Associates, LLC	2,627,123	US$4.3m	1.8%	0.21%
1.78%	Private Management Group Inc	2,558,045	US$4.2m	1.12%	0.13%
1.69%	Geode Capital Management, LLC	2,439,424	US$4.0m	-0.88%	no data
1.55%	John Higgins	2,237,377	US$3.6m	3.95%	no data
1.48%	Citadel Advisors LLC	2,132,592	US$3.5m	999%	no data
1.4%	State Street Global Advisors, Inc.	2,010,909	US$3.3m	4.66%	no data
1.25%	Gotham Asset Management, LLC	1,800,246	US$2.9m	65.8%	0.02%
1.22%	Kent Lake PR LLC	1,750,000	US$2.9m	678%	1.13%
0.99%	Joel Greenblatt	1,428,571	US$2.3m	0%	no data
0.77%	Jacobs Levy Equity Management Inc	1,105,524	US$1.8m	0%	0.01%
0.66%	Janus Henderson Group plc	948,434	US$1.5m	-88.2%	no data
0.6%	Royce & Associates, LP	867,080	US$1.4m	6.12%	0.01%
0.58%	Northern Trust Global Investments	836,869	US$1.4m	1.18%	no data
0.58%	Charles Schwab Investment Management, Inc.	832,274	US$1.4m	2.63%	no data
0.58%	TowerView LLC	831,100	US$1.4m	43.3%	0.92%
0.51%	JPMorgan Chase & Co.	727,552	US$1.2m	33.6%	no data
0.49%	Renaissance Technologies LLC	707,550	US$1.2m	2,560%	no data
0.45%	Millennium Management LLC	650,316	US$1.1m	394%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/10/05 08:21
End of Day Share Price	2025/10/03 00:00
Earnings	2025/06/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

OmniAb, Inc. is covered by 11 analysts. 7 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Robert Wasserman	Benchmark Company
Matthew Hewitt	Craig-Hallum Capital Group LLC
Tiago Fauth	Credit Suisse