About Shelfmark
Shelfmark is a private company based in Pittsburgh, Pennsylvania, incorporated in 2022 in Delaware. It has reported $6,180,978 raised in two offerings on Form D since November 2025. Its chief executive is Patrick O'Donnell.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Jun 29, 2026 | Jul 14, 2026 | $4,855,978of $5.1M target | 19 | $255K | EquityRule 506(b) | Form D ↗ |
| Aug 22, 2023 | Nov 12, 2025amended Jul 14, 2026 | $1,325,000fully sold | 15 | $88,333 | Convertible securitiesRule 506(b) | Form D/A ↗1 earlier filing |
| Total, two offerings | $6,180,978 | |||||
First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.
Leadership Team
Executive officers and directors listed on Shelfmark's Form D filed Jul 14, 2026.

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