SCHEDULE 13G Filed 2026-06-10 Event — SEC 0001214659-26-007338 →

TANG CAPITAL MANAGEMENT LLC → Fulcrum Therapeutics, Inc. FULC

Stake: — Shares: — Class: Common stock, par value $0.001 per share

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 34/100 · Filer 90d Win Rate: 100% · Hist. 90d Edge: +0.5%

Filer track record (3 filings): 100% 90d win rate, +0.5% 90d edge
Held by 1 tracked 13F institutional manager
Moderate short days-to-cover (4.7 DTC)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

4 transactions

4 buys · 0 sales · 0 awards/exercises

Issuer Cluster

5 13D/G filings on this issuer

4 other filings besides this one

Filer Track Record

12 filings by this filer

11 other filings in the data moat

Short Interest · settle 2026-10-15

DTC 4.73

6,756,520 shares short · -5.0% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $27.12M

Point72 Asset Mgmt

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-07-15	TANG KEVIN	10%+ owner	Buy	107,377	$3.56	$382K
2026-07-14	TANG KEVIN	10%+ owner	Buy	53,651	$3.56	$191K
2026-07-14	TANG KEVIN	10%+ owner	Buy	75,952	$3.58	$272K
2026-07-13	TANG KEVIN	10%+ owner	Buy	12,966	$3.54	$46K

Other 13D/G Filings on Fulcrum Therapeutics, Inc.

Filed	Form	Filer	Stake	Shares
2026-08-03	SCHEDULE 13G	BANK OF AMERICA CORP /DE/	—	—	view →
2026-07-17	SCHEDULE 13G	BlackRock Portfolio Management LLC	—	—	view →
2026-06-25	SCHEDULE 13G	EcoR1 Capital, LLC	—	—	view →
2026-06-25	SCHEDULE 13G	EcoR1 Capital, LLC	—	—	view →

Other Filings by TANG CAPITAL MANAGEMENT LLC

Filed	Form	Issuer	Stake	Shares
2026-10-06	SCHEDULE 13G	Atea Pharmaceuticals, Inc.	—	—	view →
2026-07-27	SCHEDULE 13D/A	Nano Dimension Ltd.	—	16,715,812	view →
2026-06-30	SCHEDULE 13D	Nano Dimension Ltd. NNDM	—	14,292,813	view →
2026-06-29	SCHEDULE 13G	Boundless Bio, Inc. BOLD	—	—	view →
2026-06-04	SCHEDULE 13D/A	Aurinia Pharmaceuticals Inc. AUPH	10.00%	13,044,106	view →
2026-05-13	SCHEDULE 13D/A	Kezar Life Sciences, Inc.	—	0	view →
2025-09-03	SCHEDULE	iTeos Therapeutics, Inc.	100.00%	10,000	view →
2025-05-19	SCHEDULE	Allakos Inc.	100.00%	10,000	view →
2025-04-03	SCHEDULE	Allakos Inc.	9.60%	8,693,687	view →
2025-03-04	SCHEDULE	Aurinia Pharmaceuticals Inc. AUPH	7.30%	10,029,500	view →
2025-02-27	SCHEDULE	ACELYRIN, Inc.	7.30%	7,298,328	view →

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