Cover Page - USD ($)
$ in Millions |
12 Months Ended |
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Dec. 31, 2021 |
Feb. 25, 2022 |
Jun. 30, 2021 |
| Cover [Abstract] |
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| Document Type |
10-K
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| Document Annual Report |
true
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| Current Fiscal Year End Date |
--12-31
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| Document Period End Date |
Dec. 31, 2021
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| Document Transition Report |
false
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| Entity File Number |
001-39634
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| Entity Registrant Name |
Foghorn Therapeutics Inc.
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| Entity Incorporation, State |
DE
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| Entity Tax Identification Number |
47-5271393
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| Entity Address, Street |
500 Technology Square, Ste 700
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| Entity Address, City |
Cambridge
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| Entity Address, State |
MA
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| Entity Address, Postal Zip Code |
02139
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| City Area Code |
617
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| Local Phone Number |
586-3100
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| Title of each class |
Common Stock, $0.0001 Par Value
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| Trading Symbol(s) |
FHTX
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| Name of each exchange on which registered |
NASDAQ
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| Entity Well-known Seasoned Issuer |
No
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| Entity Voluntary Filers |
No
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| Entity Current Reporting Status |
Yes
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| Entity Interactive Data Current |
Yes
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| Entity Filer Category |
Non-accelerated Filer
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| Entity Small Business |
true
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| Entity Emerging Growth Company |
true
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| Entity Ex Transition Period |
false
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| ICFR Auditor Attestation Flag |
false
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| Entity Shell Company |
false
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| Entity Public Float |
|
|
$ 208.8
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| Entity Common Stock, Shares Outstanding |
|
41,421,964
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| Amendment Flag |
false
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| Document Fiscal Year Focus |
2021
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| Document Fiscal Period Focus |
FY
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| Entity Central Index Key |
0001822462
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