United States · 
Who invested in Shelfmark?
Shelfmark's investors include Innovation Works.
2026
?Venture$4.9MVenture
United States · Venture startup
Who invested in Shelfmark
Funding summaryUpdated 26 Oct 2026
$4.9Mraised across 2 rounds since 2025, from 2 sources
- Latest round
- Venture, $4.9MJul 2026
- Investors
- 1
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Venture Jul 2025
- Biggest round
- $4.9M Venture · Jul 2026
- Between rounds
- 12 months from the last two
The rounds
- Jul 2026
- Jul 2025
Founders and team
From Shelfmark's own website: 4 on the team.
- Pat O’DonnellCEO
- Zach RomacHead of Product
- Billy KunzPrincipal Engineer
- Craig MarkovitzChairman
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 6 firms list Shelfmark as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Shelfmark
How much has Shelfmark raised?
Shelfmark has raised $4.9M across 2 rounds since 2025. One round did not disclose an amount, so the total is a floor.
When did Shelfmark last raise?
Shelfmark's most recent round was a Venture of $4.9M in Jul 2026.
What was Shelfmark's biggest round?
Its most recent round, $4.9M in Jul 2026, is also its largest on record.
Who backed Shelfmark first?
Shelfmark's first round on record, in Jul 2025, was backed by Innovation Works.
What stage is Shelfmark at?
Shelfmark's latest named round is a Venture, in Jul 2026.
Where is Shelfmark based?
Shelfmark is based in the United States.
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