Security key
344174107
Foghorn Therapeutics Inc. - Common Stock, $0.0001 par value per share (FHTX)
CUSIP: 344174107
Q2 2026 13F Holders as of 30 Jun 2026
- Security type / class
- Equity / Common Stock, $0.0001 par value per share
- Total 13F shares
- 70,643
- Total 13F value
- $344,998
- Share change
- -27,532
- SEC-reported price per share
- $4.88
- Number of holders
- 18
- Value change
- -$129,402
- Number of buys
- 8
- Number of sells
- 8
- Shares outstanding
- 58,724,855
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2026
Institutions
18
Top holders
10
FHTX full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q1 2026
Foghorn Therapeutics Inc. SEC filings
Foghorn Therapeutics Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 344174107
Recent filing periods:
Ownership snapshot
Top reported holders of FHTX - Foghorn Therapeutics Inc. - Common Stock, $0.0001 par value 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
Flagship Ventures Fund V,...
Disclosed value leader
Flagship Ventures Fund V,...
Comparable rows
15/15
Latest evidence
31 Mar 2026
13D/G
13F
3/4/5
Lead comparable stake: 27%
13D/G row: Flagship Ventures Fund V, L.P.
Showing 1-6 of 15 holder rows.
Quick read
Flagship Ventures Fund V, L.P. leads the comparable SEC ownership view at 27%.
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 Flagship Ventures Fund V, L.P.'s linked filing trail.
Comparable ownership
Top 5
Flagship Ventures Fund V, L.P.
27%
FMR LLC
12%
BIOTECHNOLOGY VALUE FUND L P
10%
James E. Flynn
8.6%
Flagship Pioneering, LLC
22%
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 |
|---|---|---|---|---|---|
| Flagship Ventures Fund V, L.P. |
13D/G
Noubar Afeyan
|
27%
|
$112,194,766
20,774,885 shares
|
$0 | 09 Jan 2026 |
| FMR LLC |
13D/G
13F
Company
|
12%
|
$32,467,462
6,792,356 shares
|
+$5,270,605 | 31 Mar 2026 |
| BIOTECHNOLOGY VALUE FUND L P |
13D/G
BVF PARTNERS L P/IL
|
10%
|
$28,042,410
5,866,613 shares
|
$0 | 31 Mar 2026 |
| James E. Flynn |
13D/G
Deerfield Mgmt, L.P.
|
8.6%
|
$24,566,920
5,139,523 shares
|
$0 | 31 Mar 2026 |
| Flagship Pioneering, LLC |
13F
3/4/5
Company · Director, 10%+ Owner
|
22%
|
$60,582,294
12,674,120 shares
|
— | 31 Mar 2026 |
| BVF INC/IL |
13F
Company
|
9.9%
|
$27,924,760
5,842,000 shares
|
— | 31 Mar 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 Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
18
Shares
70,643
Rows available
18
| 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 Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
104
Q2 2026 holders
18
Holder diff
-86
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend