SCHEDULE 13D/A Filed 2026-05-13 Event 2026-05-11 SEC 0001104659-26-060292 →

Fairmount Funds Management LLC → Viridian Therapeutics, Inc.\DE VRDN

Stake: — Shares: 17,201,800 Class: Common Stock, $0.01 par value per share

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)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

4 13D/G filings on this issuer

3 other filings besides this one

Filer Track Record

18 filings by this filer

17 other filings in the data moat

Short Interest · settle 2026-07-31

DTC 11.31

19,234,874 shares short · +1.6% vs prior

Post-Filing Returns · since 2026-05-11 on VRDN

+1 day

0.0%

+5 days

0.0%

+30 days

0.0%

+60 days

-3.6%

+90 days

—

+180 days

—

Anchor price 20.47 on closest trading day on/after 2026-05-11. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Viridian Therapeutics, Inc.\DE

Filed	Form	Filer	Stake	Shares
2026-06-26	SCHEDULE 13G	Paradigm Biocapital Advisors LP	—	—	view →
2024-04-01	SC	Fairmount Funds Management LLC	—	—	view →
2021-09-23	SC	Fairmount Funds Management LLC	—	—	view →

Other Filings by Fairmount Funds Management LLC

Filed	Form	Issuer	Stake	Shares
2026-07-20	SCHEDULE 13D/A	Crescent Biopharma, Inc.	—	6,593,385	view →
2026-07-01	SCHEDULE 13D/A	ORUKA THERAPEUTICS, INC. ORKA	19.50%	14,553,895	view →
2026-06-23	SCHEDULE 13D/A	SPYRE THERAPEUTICS, INC. SYRE	—	8,835,440	view →
2026-06-23	SCHEDULE 13D/A	Apogee Therapeutics, Inc. APGE	9.99%	6,713,519	view →
2026-06-09	SCHEDULE 13D/A	Jade Biosciences, Inc. JBIO	19.99%	14,069,494	view →
2026-01-22	SCHEDULE	Apogee Therapeutics, Inc. APGE	9.99%	6,047,027	view →
2026-01-22	SCHEDULE	Cogent Biosciences, Inc. COGT	9.90%	16,261,918	view →
2025-10-14	SCHEDULE	Apogee Therapeutics, Inc. APGE	9.99%	5,776,881	view →
2025-09-15	SCHEDULE	Dianthus Therapeutics, Inc. /DE/ DNTH	9.90%	4,052,052	view →
2025-03-10	SCHEDULE	Oruka Therapeutics, Inc. ORKA	19.99%	8,511,824	view →
2024-04-01	SC	Dianthus Therapeutics, Inc. /DE/ DNTH	—	—	view →
2024-04-01	SC	Viridian Therapeutics, Inc.\DE VRDN	—	—	view →
2024-04-01	SC	Apogee Therapeutics, Inc. APGE	—	—	view →
2024-04-01	SC	Cogent Biosciences, Inc. COGT	—	—	view →
2023-12-11	SC	Spyre Therapeutics, Inc. SYRE	—	—	view →
2023-06-13	SC	Cogent Biosciences, Inc. COGT	—	—	view →
2021-09-23	SC	Viridian Therapeutics, Inc.\DE VRDN	—	—	view →

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