Stack Infrastructure
SelectiveDenver, COHealthcare, Manufacturing, EnergyLast fund filed 2025
6 on a current fund
last 24 months
across filed funds
| Vehicle | Filed | Target | Sold to date | Investors |
|---|---|---|---|---|
| STACK INFRASTRUCTURE USA III FOREIGN, LLC | 2025 | $125,000 | $125,000 | 125 |
| STACK Infrastructure USA III, LLC | 2023 | $125,000 | $125,000 | 125 |
| STACK Infrastructure USA II, LLC | 2021 | $125,000 | $125,000 | 125 |
Amounts are Item 13 as filed: the target is the whole offering, and the amount sold is cumulative across amendments rather than a final close. The filing carries no per-investor amount, so a firm’s own cheque is not recoverable here.
9 partners are named across this firm’s filings, 6 of them on a fund it is deploying now.
| Partner | Activity | Categories | Board seats | Last 24mo |
|---|---|---|---|---|
| Brian Cox | Slowing | Medical devices, Enterprise software, Sales & marketing tech | 4 |
Classified sectors of Stack Infrastructure’s own portfolio companies, based on 16 with a verified or cited source.
| Firm | Shared boards | Companies |
|---|---|---|
| IPI Partners | 11 | AQ Sunshine Parent, AquaHydrex, ASPi Solutions, Bainbridge Health, CPD to SPD, cultivate(MD) Capital Accelerator Fund, HAPPE Spine, Nanostone Water, SHOULDER INNOVATIONS, Solecta, Synata Bio |
| Lightstone Ventures | 1 | SHOULDER INNOVATIONS |
A shared board seat: a company where filings name a Stack Infrastructure partner and a partner at the other firm, both with a clean identity match. Not a claim either firm led or co-led the round, only that both are named on the same board.
| 1 |
| Thomas LynchNot on the current fund | Slowing | Digital health, Enterprise software | 3 | 1 |
| Heather PaduckNot on the current fund | Quiet | None listed | 0 | 0 |
| Jeffrey FelderNot on the current fund | Quiet | None listed | 0 | 0 |
| Lauren Sullivan | Quiet | Digital health | 1 | 0 |
| Matthew A'Hearn | Quiet | Medical devices, Climate & energy, Manufacturing & industrials | 8 | 0 |
| Philip Koen | Quiet | Enterprise software | 1 | 0 |
| Robert Hartog | Quiet | None listed | 0 | 0 |
| Sean Ivery | Quiet | None listed | 0 | 0 |
Activity is filed board seats in the last 24 months: 4+ Active, 2–3 Selective, 1 Slowing, none Quiet. A firm's tier totals its partners, so an active firm may be four partners with one seat each. It undercounts partners who invest without taking a board seat, and filings lag a closing by weeks, so Quiet means the paperwork is quiet, not the person.
Not a filing value: this is Lev’s own classification of each company, one company one vote regardless of how many of Stack Infrastructure’s partners are named on its board, shown only when we found a specific, checkable source. Companies with no source read as unclassified and are left out of the shares above.