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MEDIA RELEASE Exhibit 99.1 ROCKET LAB Rocket Lab Provides First Half 2021 Financial Results Update Revenue of $ 29.5M , representing 237 % Year - on - Year revenue growth , accompanied by an expansion in gross margins from negative 67 % to a positive 13 % . Increasing diversity in revenue , with Space Systems contributing 18 % of total revenue in the period , compared to 3 % in the prior year , accompanied with gross margins of 65 % . Backlog grew 136 % Year - on - Year to $ 141.4 million as of June 30 , 2021 as compared to backlog of $ 59.9 million as of June 30 , 2020 . Long Beach , California . September 8 , 2021 - Rocket Lab USA , Inc. ( Nasdaq : RKLB ) ( " Rocket Lab ” or “ the Company " ) , , a global leader in launch services and space systems , today reviewed financial results for the six months ended June 30 , 2021 , which were previously released in its 8 - K filed with the US Securities and Exchange Commission on August 31 , 2021 . " In the first half of 2021 , we continued our track record of consistent execution across launch and space systems , further establishing Rocket Lab as a new breed of end - to - end space company . This continues to be validated by our market and technology leading customers and industry partners in the form of further strengthening of contract backlog in the first half of 2021 , " said Peter Beck , Rocket Lab founder and Chief Executive Officer . " Following the completion of our merger with Vector Acquisition Corporation on August 25 , 2021 , we're well positioned to continue our expansion into space systems and further development of our 8 - ton payload class Neutron launch vehicle to unlock the potential of space . ” First Half 2021 Business Highlights : • Launched three missions in the first half of 2021 , followed by a fourth in July 2021. The missions brought the total number of Electron launches to 21. The Electron launch vehicle has now deployed 105 satellites to orbit . Entered into a contract with Varda Space Industries to manufacture and operate three Photon spacecraft to enable in - space manufacturing . Entered into a contract with BlackSky Global for five Electron launches to support their constellation growth . Entered into a contract to launch a General Atomics Electromagnetic Systems ( GA - EMS ) developed Orbital Test Bed ( OTB ) Satellite . rocketlabusa.com | media@rocketlabusa.com