Assembly Biosciences, Inc.

NasdaqGS:ASMB Stock Report

Market Cap: US$485.5m

Assembly Biosciences Ownership

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

Recent Insider Transactions

NasdaqGS:ASMB Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
08 Aug 25BuyUS$45,000,032Gilead Sciences, Inc.Company2,295,920US$19.60
31 Mar 25SellUS$1,773Jeanette BjorkquistIndividual180US$9.85
31 Mar 25SellUS$1,940Nicole WhiteIndividual197US$9.85
31 Mar 25SellUS$3,496Jason OkazakiIndividual355US$9.85
31 Mar 25SellUS$7,455John McHutchisonIndividual757US$9.85
30 Dec 24BuyUS$49,998Michael HoughtonIndividual3,202US$15.61
19 Dec 24BuyUS$20,098,464Gilead Sciences, Inc.Company940,499US$21.37
25 Nov 24BuyUS$371,994Alexander SchornsteinIndividual25,000US$15.00
18 Nov 24SellUS$652Nicole WhiteIndividual40US$16.29

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 ASMB?
Owner TypeNumber of SharesOwnership Percentage
Individual Insiders605,5243.89%
Institutions984,8326.33%
VC/PE Firms1,020,4106.56%
Hedge Funds2,140,51013.8%
Public Companies4,505,39129%
General Public6,303,34240.5%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 144.8%.

Top Shareholders

Top 25 shareholders own 59.24% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
29%
Gilead Sciences, Inc.
4,505,391US$140.6m104%no data
7.33%
Farallon Capital Management, L.L.C.
1,140,510US$35.6m0%0.16%
6.56%
RA Capital Management, L.P.
1,020,410US$31.8m0%0.36%
6.43%
Commodore Capital LP
1,000,000US$31.2m0%1.41%
3.49%
Alexander Schornstein
543,523US$17.0m-25.4%no data
1.63%
The Vanguard Group, Inc.
253,825US$7.9m17.5%no data
1.22%
The B Group, Inc.
189,350US$5.9m-5.33%4.2%
0.69%
Renaissance Technologies LLC
107,521US$3.4m-5.11%no data
0.58%
BlackRock, Inc.
89,672US$2.8m13.5%no data
0.33%
Geode Capital Management, LLC
51,015US$1.6m6.94%no data
0.27%
Monimus Capital Management, LP
42,067US$1.3m0%1.07%
0.23%
Citadel Advisors LLC
35,725US$1.1m191%no data
0.19%
Ellsworth Advisors, LLC
29,950US$934.4k0%0.2%
0.18%
Northern Trust Global Investments
28,075US$875.9k-0.88%no data
0.16%
Federated Hermes, Inc.
25,394US$792.3k0%no data
0.13%
Acadian Asset Management LLC
20,421US$637.1k-11.3%no data
0.12%
Palumbo Wealth Management LLC
18,667US$582.4k3.79%0.17%
0.11%
John McHutchison
16,604US$518.0k0.01%no data
0.1%
William Delaney
16,005US$499.4k-1.28%no data
0.098%
Bridgeway Capital Management, LLC
15,225US$475.0k0%0.01%
0.095%
GSA Capital Partners LLP
14,840US$463.0k0%0.03%
0.091%
Jason Okazaki
14,107US$440.1k0.01%no data
0.09%
State Street Global Advisors, Inc.
14,009US$437.1k0%no data
0.085%
Numeric Investors LLC
13,227US$412.7k-26.3%no data
0.076%
American Century Investment Management Inc
11,799US$368.1k0%no data

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2025/11/09 03:54
End of Day Share Price 2025/11/07 00:00
Earnings2025/06/30
Annual Earnings2024/12/31

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.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* 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

Assembly Biosciences, Inc. is covered by 13 analysts. 5 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Brian SkorneyBaird
Madhu KumarB. Riley Securities, Inc.
Irina Rivkind KofflerCantor Fitzgerald & Co.