Rocket Lab Delays Neutron Launch to 2027 After Targeting Fourth Quarter of 2026
Key Facts
Rocket Lab announced on October 14 that the first flight of its Neutron rocket is now expected in 2027, after the previous schedule targeted a launch in the fourth quarter of 2026. In a filing with the U.S. Securities and Exchange Commission, the company said the maiden flight is “now expected in 2027.” It said the delay was linked to a manufacturing issue with the first-stage tank’s forward dome and the necessary investigation and remediation work. The company’s August update had said the tank was being produced in line with the vehicle’s planned arrival at the launch pad in the fourth quarter of 2026. The new timing delays Neutron’s entry into the medium-lift rocket category, which the company is targeting for larger missions.
A comparison of the August and October updates shows a shift in the schedule over roughly two months. On August 10, Rocket Lab said production of the first-stage tank was on track with the goal of getting Neutron to the launch pad in the fourth quarter of 2026, while assembly and testing of first-flight hardware were also progressing. But the vehicle’s arrival at the pad in that quarter did not necessarily mean it would launch during that period; Reuters reported in August that the company was targeting arrival at the launch pad in the fourth quarter rather than conducting the maiden flight then. The October announcement then put the launch itself in 2027. The manufacturing issue with the first-stage tank’s forward dome, and factors related to the investigation and remediation, explain the schedule shift.
The tank’s development history includes a test conducted in January. On January 21, Rocket Lab announced that the first-stage tank ruptured during a hydrostatic qualification pressure test, saying such tests deliberately push structures to their limits to verify safety. That test provides context for the vehicle’s technical development, but does not by itself establish that the forward-dome issue cited in the October update resulted directly from the rupture. In August, the company said tank production was consistent with the target date for arrival at the launch pad, before announcing the new maiden-flight timing in October. Tank manufacturing and completion of the investigation and remediation remain part of the work ahead of launch.
Neutron is designed for a broader range of missions than the company’s smaller launch vehicles. Reuters described the rocket as medium-lift and reusable, and said Rocket Lab is making it central to its effort to compete for larger commercial satellite, civil space and U.S. national security missions. Moving the maiden flight to 2027 delays the vehicle’s test on its first launch mission in that effort. The company also has a government contract directly tied to the rocket: in its August update, it said the U.S. Space Force awarded it a $397 million contract to provide multiple spacecraft and launch them on Neutron as part of a space-based weather monitoring program. The contract is one component of the backlog that the company said reached a record level in the second quarter.
Rocket Lab said in August that second-quarter revenue reached a record $234 million, up 62% year over year, and that backlog reached $2.36 billion, up 137% year over year. These figures show the scale of activity surrounding the company’s program, while Neutron remains a future project within a broader portfolio of contracts and missions. In its existing launch business, the company signed a multiyear agreement in September with Japan’s Synspective for 20 new missions using its Electron rocket, which is designed to launch Earth-observation satellites. The agreement is a separate indicator of continued contracting for Electron, while Neutron remains tied to the goal of entering the medium-lift rocket category. The first-launch delay comes within this operating context, which combines current Electron activity with Neutron’s development.
The announcement quickly affected the stock’s trading; Reuters reported that Rocket Lab shares fell about 6% in after-hours trading following the October 14 announcement. According to Elexven data, the stock, listed under the ticker RKLB, closed at $52.6 on October 23, 2026. The data used do not include a daily trading range for the stock on that date. More than a week separates the initial after-hours reaction from the later closing price, so the two figures describe different periods. Reuters did not provide, in the cited report, a later after-hours trading figure linking the October 23 close directly to the delay.
The company did not specify a date in 2027 for the maiden flight in its update. It also cautioned in its filing that launch and development schedule information is forward-looking and does not constitute a promise or guarantee, as actual results may differ because of risks and uncertainties. The announced timing therefore remains an estimate for the maiden flight, while the steps ahead of it are tied to completing the investigation and remediation following the manufacturing issue with the first-stage tank’s forward dome. The clarification appeared in the company’s October 14 program filing, after the previous target had been a Neutron launch in the fourth quarter of 2026. Announced Electron agreements remain a separate ongoing track from the timing of Neutron’s first flight.