PiggyGPT

Private companiesCovered

Hermeus

Hawthorne, CA · Founded 2018

Hermeus develops uncrewed high-Mach jet aircraft and their propulsion, flight-testing for the Defense Innovation Unit, the Air Force and the Navy, and is a licensed producer of Pratt & Whitney F100 engines.

Funding

Last round or tender
Series C, Apr 7, 2026, $200M raisedBuilt In LA, Apr 8, 2026$200 million of equity and $150 million of debt, $350 million in all.
Last valuation
$1.00B, reported Apr 8, 2026Built In LA, Apr 8, 2026

Secondary venues

A venue is listed when its public page named the company on the date shown. Nothing is recorded from behind a login, and no indicative price is shown anywhere on this site.

Reads

Acquisition: Watch

A cited tie to a plausible buyer: a strategic partner, an investor stake, a tender offer, a stated appetite. Nothing reported.

Prepared by PiggyGPT, as of Oct 6, 2026

Signals

  • Apr 7, 2026Hermeus closed a $350 million Series C of $200 million equity and $150 million debt at a $1 billion post-money valuation led by Khosla Ventures, with RTX Ventures and In-Q-Tel among continuing investors.Pulse 2.0 (Hermeus release reprint), Apr 7, 2026
  • May 28, 2026The Defense Innovation Unit added $159 million, lifting the contract ceiling to $219 million, to fund Quarterhorse flight tests through 2027 with the Air Force and Navy.Hermeus (company release), May 28, 2026
  • Sep 15, 2026Pratt & Whitney signed a production license authorizing Hermeus to manufacture F100-PW-229 fighter engines as a new qualified source; the value was not disclosed.RTX (press release), Sep 15, 2026

Named counterparties

  • RTXRTX Ventures holds a stake from the Series C, and RTX’s Pratt & Whitney unit licensed Hermeus as an F100 production source. No interest in a deal has been reported.RTX (press release), Sep 15, 2026

Counterparties are named for a cited reason: a partnership, an investment, or a stated appetite. Naming is not a forecast.

A summary of what the figures on this page add up to, prepared by PiggyGPT from the record on file and its cited sources. Not the Street's view, and not advice.

Sources

Researched Oct 6, 2026