Adicet Bio Ownership

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

Recent Insider Transactions

NasdaqCM:ACET Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
08 Oct 25	BuyUS$5,000,000	OrbiMed Advisors LLC	Company		5,000,000	US$1.00

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of ACET?
Owner Type	Number of Shares	Ownership Percentage
Public Companies	968,183	0.599%
Individual Insiders	1,305,515	0.807%
VC/PE Firms	16,447,140	10.2%
Institutions	49,022,580	30.3%
General Public	93,957,496	58.1%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 78%.

Top Shareholders

Top 25 shareholders own 40.86% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
10.2%	OrbiMed Advisors LLC	16,447,140	US$8.6m	43.7%	0.11%
6.2%	Franklin Resources, Inc.	10,024,639	US$5.2m	0%	no data
5.09%	Tang Capital Management, LLC	8,223,612	US$4.3m	0%	0.12%
4.66%	RA Capital Management, L.P.	7,541,000	US$3.9m	0%	0.04%
2.32%	The Goldman Sachs Group, Inc.	3,751,617	US$2.0m	-0.01%	no data
2.02%	The Vanguard Group, Inc.	3,272,522	US$1.7m	0%	no data
1.82%	Abingworth LLP	2,948,718	US$1.5m	0%	1.92%
1.4%	Acadian Asset Management LLC	2,265,491	US$1.2m	9.2%	no data
1.13%	Renaissance Technologies LLC	1,828,949	US$951.1k	58.5%	no data
0.6%	Regeneron Pharmaceuticals, Inc.	968,183	US$503.5k	0%	no data
0.56%	Bridgeway Capital Management, LLC	901,600	US$468.8k	0%	0.01%
0.53%	Aya Jakobovits	856,662	US$445.5k	0%	no data
0.53%	Two Sigma Investments, LP	854,568	US$444.4k	66.7%	no data
0.48%	Two Sigma Advisers, LP	780,982	US$406.1k	38%	no data
0.44%	Geode Capital Management, LLC	706,334	US$367.3k	0%	no data
0.41%	Alyeska Investment Group, L.P.	655,665	US$340.9k	0%	no data
0.38%	RBF Capital LLC	617,319	US$321.0k	0%	0.01%
0.36%	BlackRock, Inc.	585,377	US$304.4k	-2.35%	no data
0.36%	Citadel Advisors LLC	583,948	US$303.7k	26.8%	no data
0.35%	Millennium Management LLC	565,953	US$294.3k	-4.45%	no data
0.3%	Schonfeld Strategic Advisors LLC	479,108	US$249.1k	-74.5%	no data
0.23%	Johnson & Johnson Innovation - JJDC, Inc.	364,472	US$189.5k	0%	0.03%
0.19%	WealthEdge Investment Advisors LLC	300,054	US$156.0k	-4.17%	0.06%
0.19%	Barclays Bank PLC	300,000	US$156.0k	100%	no data
0.15%	State Street Global Advisors, Inc.	244,186	US$127.0k	-1.11%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/12/28 03:06
End of Day Share Price	2025/12/26 00:00
Earnings	2025/09/30
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

Adicet Bio, Inc. is covered by 12 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
Justin Zelin	B. Riley Securities, Inc.
John Newman	Canaccord Genuity
Yatin Suneja	Guggenheim Securities, LLC