# Shelfmark funding: rounds and investors

> Shelfmark has raised $4.9M across 2 rounds since 2025. Investors include Innovation Works. Every round with its source.

Source: https://millionrounds.com/company/shelfmark (Millionrounds; every figure on the page links to its filing or article)

United States · [Venture startup](https://millionrounds.com/companies)

# Who invested in *Shelfmark*

2 rounds we have observed, with the one investor named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI

Raised 4 months ago

Funding summary Updated 26 Oct 2026

**$4.9M** raised across 2 rounds since 2025, from 2 sources

- **Latest round:** Venture, $4.9M Jul 2026
- **Investors:** 1

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2026

**?** Venture

**$4.9M** Venture

- **First round:** Venture
- **Biggest round:** $4.9M
- **Between rounds:** 12 months

## The rounds

- **Jul 2026** Venture **$4.9M** *1 returning* [Innovation Works](https://millionrounds.com/fund/innovation-works) Source recorded SEC filing: $4.9M sold
- **Jul 2025** Venture **Amount undisclosed** *1 new* [Innovation Works](https://millionrounds.com/fund/innovation-works) Source recorded

## Founders and team

From Shelfmark's own website: 4 on the team.

- **Pat O’Donnell** CEO
- **Zach Romac** Head of Product
- **Billy Kunz** Principal Engineer
- **Craig Markovitz** Chairman

## Everyone who backed them

[Innovation Works](https://millionrounds.com/fund/innovation-works) Government **2** rounds

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=shelfmark).

## 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.

[Hyde Park Angels](https://millionrounds.com/fund/hyde-park-angels) Angel network Per its own site

[Grand Ventures](https://millionrounds.com/fund/grand-ventures) VC firm Per its own site

[304 Angel Fund (304af)](https://millionrounds.com/fund/304-angel-fund-304af) Angel network Per its own site

[Ciao Capital](https://millionrounds.com/fund/ciao-capital) VC firm Per its own site

[HPA](https://millionrounds.com/fund/hpa) VC firm Per its own site

[TitletownTech](https://millionrounds.com/fund/titletowntech) VC firm Per its own site

## Quick answers about Shelfmark

### Who invested in Shelfmark?

Shelfmark's investors include Innovation Works.

### 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.

## Companies like Shelfmark

In the same sector, and raised in the last eighteen months.

[**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Pika** $216M · Oct 2026](https://millionrounds.com/company/pika)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor)

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