Fulcrum Therapeutics, Inc. - Common Stock, par value $0.001 per share (FULC)

Q: What does CUSIP 359616109 represent in this 13F holders report?

CUSIP 359616109 is the security identifier for FULC - Fulcrum Therapeutics, Inc. - Common Stock, par value $0.001 per share used to aggregate holder disclosures.

Q: How many institutions held FULC - Fulcrum Therapeutics, Inc. - Common Stock, par value $0.001 per share in Q3 2026?

10 institutional investors reported FULC - Fulcrum Therapeutics, Inc. - Common Stock, par value $0.001 per share for Q3 2026. Use the holders table for investor-level position and value details.

CUSIP: 359616109

Q3 2026 13F Holders as of 30 Sep 2026

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 1,246,825
Total 13F value: $4,612,553
Share change: -607,683
SEC-reported price per share: $3.70
Number of holders: 10
Value change: -$2,217,559
Number of buys: 4
Number of sells: 8
Shares outstanding: 66,925,836

Security key

359616109

Report period

Q3 2026

Institutions

Top holders

FULC full security history Ownership snapshot Full 13F holder table Fulcrum Therapeutics, Inc. SEC filings Fulcrum Therapeutics, Inc. company facts

Broader feeds

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

Reporting periods

Holder history for CUSIP 359616109

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of FULC - Fulcrum Therapeutics, Inc. - Common Stock, par value $0.001 per share (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

TANG CAPITAL MANAGEMENT LLC

Disclosed value leader

RA CAPITAL MANAGEMENT, L.P.

Comparable rows

15/15

Latest evidence

16 Jul 2026

13D/G 3/4/5 13F Lead comparable stake: 10% 13D/G row: TANG CAPITAL MANAGEMENT LLC Showing 1-6 of 15 holder rows.

Quick read

TANG CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 10%.

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 TANG CAPITAL MANAGEMENT LLC's linked filing trail.

Comparable ownership Top 5

TANG CAPITAL MANAGEMENT LLC 10%

EcoR1 Capital, LLC 9%

Nantahala Capital Management, LLC 8.2%

BlackRock, Inc. 7.2%

BANK OF AMERICA CORP /DE/ 6.7%

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
TANG CAPITAL MANAGEMENT LLC	13D/G 3/4/5 13F 10%+ Owner · Company 13D/G 3/4/5 13F	10%	$25,302,784 6,913,329 shares	+$5,349,196	13 Jul 2026
EcoR1 Capital, LLC	13D/G 13F Company 13D/G 13F	9%	$41,760,000 6,000,000 shares	$0	17 Jun 2026
Nantahala Capital Management, LLC	13D/G 13F Company 13D/G 13F	8.2%	$20,038,646 5,475,040 shares	+$8,875,500	30 Jun 2026
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	7.2% from 13D/G	$32,296,788 8,824,259 shares	—	30 Jun 2026
BANK OF AMERICA CORP /DE/	13D/G 13F Company 13D/G 13F	6.7%	$16,353,330 4,468,123 shares	$0	30 Jun 2026
BlackRock Portfolio Management LLC	13D/G 13D/G	6%	$14,718,247 4,021,379 shares	$0	30 Jun 2026

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 Q3 2026

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

Institutions

1,246,825

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 Q3 2026 vs Q2 2026 Across Filers

Q2 2026 holders

153

Q3 2026 holders

Holder diff

-143

Investor	Q2 2026 Shares	Q3 2026 Shares	Share Diff	Share Chg %	Q2 2026 value	Q3 2026 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend