Matthew Blumberg
SlowingNamed in filings at Bolster VenturesOn the current fund
- Board seats filed
- 5
Named in filings at Bolster VenturesOn the current fund
all filings on record
last 24 months
from a verified or cited source
| Alumni Ventures Group | Not yet classified | July 2025 | 82vs, Acrew Capital, GTP AW |
| Oblong | Crypto & web3 | March 2023 | None on file |
| BOLSTER NETWORKS | HR & future of work | July 2020 | High Alpha, Union Square Ventures |
| SEOMOZ | Sales & marketing tech | January 2016 | Foundry Group |
| RETURN PATH | Sales & marketing tech | December 2011 | Costanoa Ventures, Foundry Group, Union Square Ventures |
The company and date are what the SEC filing shows, not a statement of investment thesis. A partner can sit on a board for reasons that say nothing about what their firm funds today. The sector is not a filing value: it is Lev’s own classification of each company, shown only when we found a specific, checkable source for it; otherwise it reads “Not yet classified.” “Also on the board from” names another tracked firm with a partner on the same board, both with a clean identity match. It is not a claim either firm led or co-led the round, and “None on file” means no other tracked firm’s partner shares this specific board seat, not that no one else invested. Sorted newest first by default; click a column to change it. Something wrong? Tell us.
Classified sectors of companies where filings name Matthew Blumberg on the board, based on 4 filed seats with a verified or cited source.
1 more filed seat not yet classified, left out of the shares above.