From a small startup in Auckland, New Zealand, to the second most frequently launched U.S. orbital rocket , Rocket Lab has rewritten the playbook for small-lift launch and is now deep into the medium-lift market. Under founder and CEO Peter Beck , the company has built an end-to-end space systems business that designs, manufactures, and launches rockets , while also building the spacecraft that ride on them. For the cislunar community, Rocket Lab matters because it has already delivered hardware to lunar orbit . The company's Photon spacecraft bus carried NASA's CAPSTONE mission to the Moon in 2022, proving that a small, vertically integrated company can execute deep-space missions at a fraction of traditional costs. Now, with a $2.2 billion contract backlog, five newly booked Neutron launches, and Neutron still targeting its first flight in late 2026, the stakes are much higher. AI-generated image Neutron is targeting its first launch from Wallops Island, Virginia in late 2026 , a major step up from the 300 kg Electron to 13,000 kg medium-lift class. 79+ Electron Launches $200.3M Q1 2026 Revenue $2.2B Contract Backlog $816M SDA Satellite Contract 13,000 kg Neutron Payload to LEO RKLB NASDAQ Listed May 2026 Update: Neutron Gets Its First Real Commercial Test Rocket Lab's first quarter changed the risk profile around Neutron. On May 7, the company reported $200.3 million in Q1 revenue , up 63.5% from the prior year, and lifted its backlog to a record $2.2 billion . The more important signal was not the revenue number by itself. It was the launch mix behind it. Rocket Lab said it signed more launch business in the first quarter of 2026 than in all of 2025, including five dedicated Neutron missions and 31 Electron or HASTE missions. A confidential customer also booked the largest launch agreement in company history, covering five Neutron launches and three Electron launches between 2026 and 2029. That gives Neutron commercial backlog before its first flight, which is exactly what investors, lenders, and government customers wanted to see. What Changed Since This Profile Was Published • Q1 2026 revenue: $200.3 million, up 63.5% year over year • Backlog: $2.2 billion, up from $1.85 billion at year-end 2025 • Neutron bookings: Five dedicated missions signed in Q1 • Largest launch deal: Five Neutron plus three Electron launches for a confidential customer • M&A: Mynaric optical communications acquisition completed, Motiv Space Systems acquisition announced • Neutron status: First flight still targeted for late 2026 from Wallops Island The Mynaric and Motiv deals also matter for cislunar readers. Mynaric brings laser optical communications hardware into Rocket Lab's spacecraft stack, while Motiv adds space-rated robotics with Mars flight heritage. That pushes Rocket Lab further away from being a launch-only company and closer to a vertically integrated prime contractor for spacecraft, payload motion systems, optical links, and dedicated launch. The catch is timing. Neutron still has to survive vehicle integration, static fire testing, wet dress rehearsal, and first flight. A late-2026 debut leaves little margin for slips. But the order book now says customers are not waiting for flight heritage before reserving capacity. For the medium-lift market, that is the clearest sign yet that Rocket Lab has become more than an Electron success story. Electron: The Small-Lift Workhorse Rocket Lab's Electron rocket is the most prolific small-lift launch vehicle in the world. Standing 18 meters tall and powered by nine Rutherford engines , the first oxygen-rich staged combustion cycle engines to fly and the first 3D-printed engines to reach orbit , Electron can deliver approximately 300 kg to low Earth orbit . With 79 launches completed and a success rate above 95%, Electron is the backbone of Rocket Lab's revenue today. What makes Electron unique isn't just its cadence but its dual launch infrastructure . Rocket Lab operates Launch Complex 1 on the Māhia Peninsula in New Zealand, providing access to a wide range of orbital inclinations, and Launch Complex 2 at the Mid-Atlantic Regional Spaceport (MARS) on Wallops Island, Virginia, serving U.S. government and national security payloads. This two-pad strategy gives customers scheduling flexibility that single-site operators cannot match. In 2026, Electron's launch cadence is running hot. Missions this year include Japanese Earth-observation satellites for synspective, hypersonic test payloads for the U.S. military on the HASTE variant, and commercial remote-sensing constellations. The "Kakushin Rising" mission on April 22 carried eight Japanese satellites , including an origami-structured JAXA payload , from LC-1 in New Zealand. The company expects roughly 20% more launches in 2026 compared to 2025. Electron by the Numbers • Height: 18 m (59 ft) • Payload to LEO: ~300 kg (660 lb) • Engines: 9× Rutherford (first stage), 1× Rutherford Vacuum (second stage) • Propellant: RP-1/LOX with electric turbopump cycle • Launch Sites: LC-1 (New Zealand), LC-2 (Virginia) • Missions: 79+ completed through April 2026 Rocket Lab has also developed the HASTE (Hypersonic Accelerator Suborbital Test Electron) variant, a suborbital configuration designed to test hypersonic technologies at speeds exceeding Mach 5. In early 2026, Rocket Lab secured a $190 million Department of Defense contract for 20 HASTE launches over four years , a validation of the variant's value and Rocket Lab's growing defense franchise. CAPSTONE: Rocket Lab's Lunar Proving Ground In June 2022, Rocket Lab launched CAPSTONE (Cislunar Autonomous Positioning System Technology Operations and Navigation Experiment) , a microwave-oven-sized CubeSat designed to validate the near-rectilinear halo orbit (NRHO) that NASA's Gateway lunar space station will occupy. It was the first spacecraft ever to operate in this unique orbit, and its success was a critical pathfinder for the entire Artemis architecture. What made the mission remarkable wasn't just the science , it was the delivery method. Rocket Lab used its Photon Lunar spacecraft bus as a third stage and trans-lunar injection vehicle, performing a series of phasing orbits in Earth orbit before a final burn sent CAPSTONE on a ballistic lunar transfer trajectory. The entire mission , from the Electron launch vehicle to the Photon bus to mission operations , was executed by Rocket Lab, demonstrating an unprecedented level of small-company capability for deep-space missions. Rocket Lab technicians assemble spacecraft in the company's cleanroom facilities, part of a vertically integrated approach that spans components to launch. CAPSTONE arrived at the Moon in November 2022 and has been operating in NRHO ever since. The data collected has confirmed the orbit's stability and validated autonomous navigation technologies that will reduce Gateway's dependence on ground-based tracking. For Rocket Lab, CAPSTONE proved the vertically integrated model can scale to cislunar distances , a credential no other small-launch company can claim. Why CAPSTONE Matters for Cislunar CAPSTONE validated the NRHO orbit for Gateway, demonstrated autonomous spacecraft-to-spacecraft navigation, and proved that a small commercial company could deliver payloads to the Moon. It was the first commercial mission to the Moon's vicinity and a model for low-cost cislunar access. Photon and the Space Systems Business Rocket Lab's ambitions extend far beyond launch. The company's Space Systems division designs and manufactures spacecraft, components, and subsystems, making Rocket Lab one of the most vertically integrated companies in the industry. At the heart of this business is the Photon satellite bus , a configurable spacecraft platform that can operate in low Earth orbit, medium Earth orbit, or deep space. AI-generated image Rocket Lab's Photon spacecraft bus, configured for deep-space missions with its Curie propulsion system and deployable solar arrays. Rock