Diligence memo · auto-generated · as of July 2, 2026
Ambri Inc.
Ambri Inc. looks fair against its niche peers and is dormant on financing cadence.
Businessfiled
Ambri Inc. operates in Other Energy, based in Marlborough.
No verified homepage on file yet — operating evidence is limited to the public record.
Capital & rounds (filed)filed
Ambri Inc. has raised $211M in disclosed capital across 4 recorded rounds, aggregated from public filings. Its latest round is modeled as Series D+ (a $100M–$400M round).
Largest single filing: $144M on 2021-08-09.
Most recent recorded round closed around 2021-08-09.
Valuation (modeled)modeled
Provath models Ambri Inc. at approximately $1.6B (range $774M–$3.0B). This is an algorithmic estimate from round sizes and same-niche peers — not a quoted or reported figure.
Read: Fair. Modeled value is 0.92× the median modeled value of Series D+ Other Energy companies in 2019–2021 (10 peers) — value vs value, same stage and era. Within the normal band (92% of peer median) for its niche.
Financing rhythm & timingmixed
Historic cadence: a new round about every 37 months.
Last raise 4.9 yr ago; this sector typically re-raises about every 12 months.
Silent for over 3× the sector's normal cadence.
The last round stepped up 8.3× from the prior — scaling.
Comparablesmixed
Capital scale ranks ahead of 98% of Other Energy peers (2049 compared).
Modeled value ranks above 98% of those peers.
Closest niche peers: Coal Conversion Ventures, LLC, Texas Eastern Transmission Lp, Sion Power Corp, Sunnova Energy International Inc., Syncwatt, Inc.
Peoplefiled
11 named people on file across officers, directors and signatories.
Risks & flagsmixed
Financing has been silent well beyond sector cadence — possibly defunct, acquired, or paused.
No clearly named CEO/founder/principal in the surfaced records — key-person evidence is thin.