Thirdbase
Syndicate · New York, NY
Investment syndicate based in New York, NY. 27 deal vehicles (SPVs) filed with the SEC since Apr 2024.
- Stages
- Pre-seed, Seed
- Typical check (est.)
- $675K–$5.25M
- Latest fund
- None on file
- Last verified activity
- Mar 2026
Focus
B2B SoftwareRecent portfolio activity
Funds and vehicles on SEC file
- Mar 2026
Thirdbase Opportunity LP - Series XA
Deal vehicle · $4.5M offering
- Mar 2026
Thirdbase Opportunity LP - Series SX II
Deal vehicle · $28.4M offering
- Mar 2026
Thirdbase Opportunity LP - Series KI
Deal vehicle · $2.3M offering
- Mar 2026
Thirdbase Opportunity LP - Series ER II
Deal vehicle · $4.9M offering
- Mar 2026
Thirdbase Opportunity LP - Series DB
Deal vehicle · $1.25M offering
- Nov 2025
Thirdbase Opportunity LP - Series AP II
Deal vehicle · $550K offering
- Nov 2025
Thirdbase Opportunity LP - Series PP
Deal vehicle · $1.5M offering
- Nov 2025
Thirdbase Opportunity LP - Series CB
Deal vehicle · $900K offering
- Nov 2025
Thirdbase Opportunity LP - Series OA
Deal vehicle · $24.5M offering
- Nov 2025
Thirdbase Opportunity LP - Series GQ
Deal vehicle · $10M offering
Sources
- SEC Form D: Thirdbase Opportunity LP - Series XAMar 31, 2026
- SEC Form D: Thirdbase Opportunity LP - Series SX IIMar 30, 2026
- SEC Form D: Thirdbase Opportunity LP - Series KIMar 30, 2026
- SEC Form D: Thirdbase Opportunity LP - Series ER IIMar 30, 2026
- SEC Form D: Thirdbase Opportunity LP - Series DBMar 30, 2026
- SEC Form D: Thirdbase Opportunity LP - Series AP IINov 5, 2025
- SEC adviser record: Thirdbase Capital GP, LLCMar 31, 2026
Profile last verified Oct 12, 2026. Is this you? Correct or remove this profile.