Reactor
Series AReactor is a privately held company based in United States, founded in 2026. The latest disclosed round is Series A ($59m), dated May 28, 2026. Institutional investors on record include Lightspeed Venture Partners.
United States · EST 2026
What is Reactor?
Reactor is a privately held company based in United States, founded in 2026. The latest disclosed round is Series A ($59m), dated May 28, 2026. Institutional investors on record include Lightspeed Venture Partners. Provider of software development services. CrackTheDeck lists dated rounds and linked fund profiles so founders can see who is already on the cap table before a pitch. Round sizes are shown only when disclosed. Empty fields mean the figure was not in those records. Open a fund name to read that firm's thesis, reported AUM, and recent dated deals. This page is compiled from financings linked to catalog funds. It is not a complete cap table. Founders use this card to check the latest disclosed round, amount, and syndicate before a meeting.
Which funds backed Reactor?
Who invested in Reactor?
Funds on the dated round table. Open a name to read the fund card.
| Investor | Round | Amount | Date |
|---|---|---|---|
| Lightspeed Venture Partners | Series A | $59m | May 28, 2026 |
What do founders ask about Reactor?
What is Reactor?
Reactor is a privately held company based in United States, founded in 2026. The latest disclosed round is Series A ($59m), dated May 28, 2026. Institutional investors on record include Lightspeed Venture Partners. Provider of software development services. CrackTheDeck lists dated rounds and linked fund profiles so founders can see who is already on the cap table before a pitch. Round sizes are shown only when disclosed. Empty fields mean the figure was not in those records. Open a fund name to read that firm's thesis, reported AUM, and recent dated deals. This page is compiled from financings linked to catalog funds. It is not a complete cap table. Founders use this card to check the latest disclosed round, amount, and syndicate before a meeting.
What was Reactor's last funding round?
Reactor's latest disclosed round is Series A at $59m (May 28, 2026).
Who invested in Reactor?
Reactor has 1 institutional investors on this page, including Lightspeed Venture Partners.
How does CrackTheDeck cover Reactor?
This startup card lists dated rounds and linked fund profiles so founders can see who is already in the cap table before a pitch.
How is this page compiled?
Round, amount, and investor names on the Reactor card come from dated financings linked to fund profiles in CrackTheDeck. Empty fields mean the figure was not in those records. Updated Aug 2026.