Developer Tools angel investors
31 US angel investors and angel groups backing developer tools startups, each listed with the evidence and sources behind it: SEC Form D filings, the investor's own site or a public announcement. 21 of them have a dated filing or deal in the last 12 months. That is 25 solo GPs, 4 syndicate leads and 2 angel groups. Most are based in California (15), New York (7) and Connecticut (2). The median stated or estimated check is $325K–$1M.
Updated · How we find angels · Remove or correct a profile
Who are the most active Developer Tools angel investors?
Ranked by board seats, deal vehicles and funds on SEC filings and dated deals in the last 12 months: Alison Davis, Matthew Le Merle, Songyee Yoon, Nicholas Moran and Robin Vasan.
How many Developer Tools angel investors are there?
31 on file, 21 with a dated filing or deal in the last 12 months. Angels writing personal checks rarely file anything with the SEC, so no list of angels is complete.
How much do Developer Tools angel investors invest?
The median check is $325K–$1M, across 25 angels with a stated or estimated range. Angel groups often pool members' checks into a larger round.
Where are Developer Tools angel investors based?
Most are in California (15), New York (7) and Connecticut (2).
- Active Jun 2026
Alison DavisSolo GP · Tiburon, CA
Named as one of two individuals (Managing Member of the Managing Member of the Issuer) on the Form D for Fifth Era Coinvestors LLC - Tether I, a $20M venture SPV (Jun 2026) (23 vehicles on file: 2 funds, 21 SPVs).
Pre-seed, Seed · checks $75K–$200K
Developer ToolsFintechAI & ML - Active Jun 2026
Matthew Le MerleSolo GP · Tiburon, CA
Named as one of two individuals (Managing Member of the Managing Member of the Issuer) on the Form D for Fifth Era Coinvestors LLC - Tether I, a $20M venture SPV (Jun 2026) (23 vehicles on file: 2 funds, 21 SPVs).
Pre-seed, Seed · checks $75K–$200K
Developer ToolsFintechAI & ML - Active Feb 2026
Songyee YoonSolo GP · Menlo Park, CA
Named as the only individual (Managing Member of the General Partner) on the Form D for Principal Venture Partners, L.P., a $100M venture fund (Feb 2026) (2 vehicles on file: 1 fund, 1 SPV).
Seed, Series A · checks $1M–$3M
AI & MLDeveloper Tools - Active Sep 2026
Nicholas MoranSolo GP · Chicago, IL
Named as the only individual (Managing Member of the General Partner) on the Form D for New Stack III Q, L.P., a $14.3M venture fund (Sep 2026) (3 vehicles on file: 2 funds, 1 SPV).
Pre-seed, Seed · checks $150K–$450K
Developer Tools - Active Dec 2025
Robin VasanSolo GP · Los Altos, CA
Named as the only individual (Managing Director of the General Partner of the Issuer) on the Form D for Mango Capital 2025 LP, a $50M venture fund (Dec 2025).
Pre-seed, Seed · checks $500K–$1.5M
B2B SoftwareDeveloper ToolsAI & ML - Active Oct 2025
Gregory CastleSolo GP · Los Angeles, CA
Named as the only individual (Manager of the General Partner of the Issuer) on the Form D for Anorak Ventures Fund III, L.P., a $35M venture fund (Oct 2025).
Pre-seed, Seed · checks $350K–$1.05M
Developer ToolsMedia, Gaming & CreatorAI & ML - Active Dec 2025
Steven Wang XiSolo GP · Menlo Park, CA
Named as the only individual (Managing Director of the General Partner of the Issuer) on the Form D for Eastlink Capital Partners II, L.P., a $16.1M venture fund (Dec 2025) (2 vehicles on file: 1 fund, 1 SPV).
Pre-seed, Seed · checks $150K–$500K
AI & MLDeveloper ToolsCybersecurity - Active Mar 2026
Joshua Michael BloomSolo GP · Palo Alto, CA
Named as one of two individuals (Managing Member of the General Partner of the Issuer) on the Form D for 49 Palms Ventures Fund 1, LP, a $33.7M venture fund (Mar 2026).
Pre-seed, Seed · checks $325K–$1M
AI & MLDeveloper Tools - Active Mar 2026
Madhavan Michael RamanujamSolo GP · Palo Alto, CA
Named as one of two individuals (Managing Member of the General Partner of the Issuer) on the Form D for 49 Palms Ventures Fund 1, LP, a $33.7M venture fund (Mar 2026).
Pre-seed, Seed · checks $325K–$1M
AI & MLDeveloper Tools - Active Jun 2026
Philipp FrankSyndicate lead · Austin, TX
Named as the only individual (Managing Director of the Issuer) on the Form D for EQP AI DRIVE a Series of EQP Master I LLC, a $1.4M venture SPV (Jun 2026) (5 vehicles on file).
Pre-seed, Seed · checks $1.4M–$3M
AI & MLDefense & AerospaceHardware & RoboticsDeveloper Tools - Active Sep 2026
Thomas CallahanSyndicate lead · New York, NY
Named as the only individual (executive officer) on the Form D for Spartan Fund II, a Series of SecondMarket Growth, LLC, a $11.3M venture SPV (Sep 2026) (4 vehicles on file).
Pre-seed, Seed · checks $2.29M–$11.3M
AI & MLDeep TechDeveloper Tools - Active Feb 2026
Jeremy KranzSolo GP · San Francisco, CA
Named as the only individual (Manager of the GP LLC) on the Form D for Sentinel Global Feeder FUND I LP, a $63.9M venture fund (Jul 2023) (2 vehicles on file). Also a non-executive director at 3 startups that filed Form D.
Pre-seed to Series A · checks $675K–$2M
Media, Gaming & CreatorDeveloper Tools - Active Apr 2026
Matt A'HearnSyndicate lead · New York, NY
Named as the only individual (executive officer) on the Form D for Miner Co-Invest Feeder LP, a $28M venture SPV (Apr 2026) (2 vehicles on file). Also a non-executive director at 1 startup that filed Form D.
Seed · checks $28M
Developer ToolsHealthcare - Active Jul 2026
Yuri SagalovSolo GP · San Francisco, CA
Named as the only individual (MANAGING MEMBER OF THE GENERAL PARTNER OF THE ISSUER) on the Form D for Wayfinder Ventures II, L.P., a $19.5M venture fund (Jun 2023). Also a non-executive director at 1 startup that filed Form D.
Pre-seed to Series A · checks $200K–$600K
AI & MLB2B SoftwareHealthcareDeveloper Tools - Active Aug 2026
Christopher McKelvySolo GP · Albany, NY
Named as the only individual (Manager of the General Partner of the Issuer) on the Form D for K Ventures Infrastructure I, a series of K Ventures Growth, LP, a $4M venture SPV (Aug 2026) (2 vehicles on file: 1 fund, 1 SPV).
Pre-seed, Seed · checks $75K–$250K
Developer Tools - Active Jun 2026
Ricardo SchaeferSolo GP · New York, NY
Named as the only individual (Managing Member of the GPLLC) on the Form D for Zone 2 Ventures CIS SPV LP, a $11.5M venture SPV (Jun 2026) (2 vehicles on file: 1 fund, 1 SPV).
Pre-seed, Seed · checks $200K–$650K
AI & MLInsurtechDeveloper Tools - Active Jun 2026
Elina RaybergSolo GP · San Francisco, CA
Named as the only individual (executive officer) on the Form D for Varda Stack One, L.P., a venture fund (Jun 2026).
Pre-seed, Seed
Developer Tools - Active Aug 2026
New Louisiana Angel FundAngel group · Shreveport, LA
New Louisiana Angel Fund: listed as an ACA fund member; 1 Form D vehicle (latest New Louisiana Angel Fund 3, LLC, filed 2023-09-01); its site describes the group.
Pre-seed, Seed
B2B SoftwareHealthcareE-commerce & RetailDeveloper Tools+1 - Active Nov 2025
Brian Robert BellSolo GP · Folsom, CA
Named as the only individual (Managing Partner of the Manager of the General Partner of the Fund) on the Form D for Team Ignite Fund I, LP, a $5M venture fund (Nov 2025) (2 vehicles on file).
Pre-seed, Seed · checks $100K–$300K
Developer Tools - Active Nov 2025
Kai GoldenSolo GP · Miami, FL
Named as the only individual (Managing Director of the Issuer) on the Form D for Kardashev Compute I LP, a venture fund (Nov 2025).
Pre-seed, Seed
Developer Tools - Active Mar 2026
Space AngelsAngel group · New York, NY
Space Angels: 14 Form D vehicles (latest Space Angels LXXXV LLC, filed 2025-10-08); its site describes the group.
Seed
AI & MLSpaceDeveloper Tools - Active Sep 2025
Sean HogeSolo GP · San Francisco, CA
Named as the only individual (Managing Member of the General Partner of the issuer) on the Form D for Starship Ventures Fund III LP, a venture fund (Apr 2025) (2 vehicles on file). Also a non-executive director at 1 startup that filed Form D.
Pre-seed to Series A · checks $500K–$1.5M
Deep TechDeveloper ToolsIndustrial & Manufacturing - Active Jun 2025
Patrick M. MatthewsSolo GP · San Antonio, TX
Named as the only individual (Managing Member of the Upper-Tier GP of the Issuer) on the Form D for Active Capital III, L.P., a $28.3M venture fund (Jun 2025).
Pre-seed, Seed · checks $275K–$850K
B2B SoftwareAI & MLDeveloper Tools - Active Feb 2025
Sumeet SinghSolo GP · Brooklyn, NY
Named as the only individual (Managing Member of the General Partner of the Issuer) on the Form D for Worldbuild Ventures I, LP, a venture fund (Feb 2025).
Pre-seed, Seed
Developer Tools - Active Aug 2024
Peter CasellaSolo GP · Brooklyn, NY
Named as the only individual (Managing Director of the Issuer's General Partner) on the Form D for Stack Performance, L.P., a venture fund (Aug 2024) (2 vehicles on file).
Pre-seed, Seed
Developer Tools - Active Jun 2024
Taylor ClausonSolo GP · Kansas City, MO
Named as the only individual (Manager of the General Partner of the Issuer) on the Form D for Abstraction Capital II LP, a $15M venture fund (Jun 2024).
Pre-seed, Seed · checks $150K–$450K
Developer ToolsAI & MLB2B Software - Active Feb 2024
John CambierSyndicate lead · Chapel Hill, NC
Named as the only individual (Managing Partner of General Partner of Issuer.) on the Form D for IDEA Co-Investment Fund I, LP, a $135K venture SPV (Feb 2024). Also a non-executive director at 1 startup that filed Form D.
Series A · checks $135K
Hardware & RoboticsDeveloper ToolsMedia, Gaming & Creator - Active Dec 2023
Babak HamadaniSolo GP · San Francisco, CA
Named as the only individual (Managing Member of the Manager of the Issuer) on the Form D for Prime Set Group II, LLC, a $10M venture fund (Dec 2023).
Pre-seed, Seed · checks $100K–$300K
ConsumerDeveloper Tools - Active Sep 2025
Jason CorselloSolo GP · Madison, CT
Named as one of two individuals (Managing Member of the General Partner of the Issuer) on the Form D for Acadian Ventures Fund III, LP, a $60M venture fund (Sep 2025).
Seed, Series A · checks $600K–$1.8M
B2B SoftwareDeveloper Tools - Active Sep 2025
Thomas OtterSolo GP · Madison, CT
Named as one of two individuals (Managing Member of the General Partner of the Issuer) on the Form D for Acadian Ventures Fund III, LP, a $60M venture fund (Sep 2025).
Seed, Series A · checks $600K–$1.8M
B2B SoftwareDeveloper Tools - Active Aug 2025
Sunil ChhayaSolo GP · Palo Alto, CA
Named as one of two individuals (Managing Director of the General Partner of the Issuers) on the Form D for Kearny Jackson Fund III, L.P., a $66.8M venture fund (Aug 2025).
Seed, Series A · checks $675K–$2M
AI & MLDeveloper ToolsB2B SoftwareHardware & Robotics
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