# clm_A7F78BFE8AE0

subject: Substack (/record/substack.md)  
predicate: headquarters  
value: San Francisco  
valid_from: undated  
valid_to: null  
published: no source on record carries a date  
recorded: 2026-11-01  
confidence: 0.60  
status: unverified  
assertable: false (unverified: Unverified: one source that is not primary, or a primary source below confidence 0.7. Asserted once a primary source or a second independent domain confirms it.)  
superseded_by: null  
last_updated: 2026-11-02  
cite: AsOf. "Substack headquarters: San Francisco", undated. Claim clm_A7F78BFE8AE0, https://asof.is/claim/clm_A7F78BFE8AE0, accessed 2026-11-09. Source: https://multiples.vc/private-comps/substack.  
checked: 2026-11-02 · its source page states the value and the date  

> Where is Substack headquartered? Substack is headquartered in San Francisco, CA, United States.

What https://multiples.vc/private-comps/substack says, word for word.

## Sources

- https://multiples.vc/private-comps/substack (secondary, multiples.vc)

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.