ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") (ASMB)

Q: What does CUSIP 045396207 represent in this 13F holders report?

CUSIP 045396207 is the security identifier for ASMB - ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") used to aggregate holder disclosures.

Q: How many institutions held ASMB - ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") in Q1 2026?

74 institutional investors reported ASMB - ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") for Q1 2026. Use the holders table for investor-level position and value details.

CUSIP: 045396207

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / Common Stock, par value $0.001 per shares (the "Shares")
Total 13F shares: 13,568,603
Total 13F value: $376,381,234
Share change: -167,251
SEC-reported price per share: $27.75
Number of holders: 74
Value change: -$6,937,135
Number of buys: 39
Number of sells: 27
Shares outstanding: 15,738,333

Security key

045396207

Report period

Q1 2026

Institutions

Top holders

ASMB full security history Ownership snapshot Full 13F holder table Previous quarter: Q4 2025 ASSEMBLY BIOSCIENCES, INC. SEC filings ASSEMBLY BIOSCIENCES, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 045396207

Previous quarter: Q4 2025

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of ASMB - ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Commodore Capital LP

Disclosed value leader

GILEAD SCIENCES, INC.

Comparable rows

15/15

Latest evidence

31 Dec 2025

13F 13D/G 3/4/5 Lead comparable stake: 9.9% 13D/G row: Commodore Capital LP Showing 1-6 of 15 holder rows.

Quick read

Commodore Capital LP leads the comparable SEC ownership view at 9.9%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Commodore Capital LP's linked filing trail.

Comparable ownership Top 5

Commodore Capital LP 9.9%

RA CAPITAL MANAGEMENT, L.P. 9.5%

JANUS HENDERSON GROUP PLC 8.2%

Farallon Capital Partners, L.P. 7.8%

Alexander Schornstein 3.5%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Commodore Capital LP	13F 13D/G Company 13F 13D/G	9.9% from 13D/G	$34,010,000 1,000,000 shares	—	31 Dec 2025
RA CAPITAL MANAGEMENT, L.P.	13F 13D/G Company 13F 13D/G	9.5% from 13D/G	$34,704,144 1,020,410 shares	—	31 Dec 2025
JANUS HENDERSON GROUP PLC	13D/G 13F Company 13D/G 13F	8.2%	$44,444,160 1,341,508 shares	$0	28 Nov 2025
Farallon Capital Partners, L.P.	13D/G Dapice Joshua J. 13D/G	7.8%	$38,963,707 1,227,590 shares	+$2,763,919	31 Dec 2025
Alexander Schornstein	3/4/5 13D/G 10%+ Owner 3/4/5 13D/G	3.5% from 13D/G	$10,812,478 728,113 shares	—	22 Nov 2024
GILEAD SCIENCES, INC.	13F Company 13F	29%	$153,228,348 4,505,391 shares	—	31 Dec 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

13,568,603

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

Q1 2026 holders

Holder diff

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 value	Q1 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend