About Nirrin
Nirrin is a private company based in Billerica, Massachusetts. It has reported $20,017,807 raised in three offerings on Form D since October 2021. Its chief executive is Bryan Hassell.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Sep 23, 2025 | Jun 15, 2026 | $6,699,781of $9.7M target | 23 | $291K | Equity, Options, Securities on exerciseRule 506(b) | Form D ↗ |
| Feb 1, 2024 | Feb 14, 2024 | $4,818,026of $6.0M target | 20 | $240K | Equity, OptionsRule 506(b) | Form D ↗ |
| Oct 6, 2021 | Oct 20, 2021 | $8,500,000fully sold | 1 | $8.5M | EquityRule 506(b) | Form D ↗ |
| Total, three offerings | $20,017,807 | |||||
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 Nirrin's Form D filed Jun 15, 2026.
Earlier filings also listed Gregory Cresenzi (chief executive officer, last listed Feb 2024), Debrah Herman (chief financial officer, last listed Feb 2024), Jonathan Hartmann (chief executive officer and director, last listed Oct 2021) and John Ho (director, last listed Oct 2021).

