Space Economy: Opportunities Ahead

Space Economy: Opportunities Ahead

• 1. March 2021 rocketlabusa.com Rocket Lab USA Investor Presentation SPACE IS OPEN FOR BUSINESS

• 2. This presentation (this “Presentation”) was prepared for informational purposes only to assist interested parties in making their own evaluation of the proposed transaction (the “Transaction”) between Vector Acquisition Corporation Inc. (“Vector”, “we”, or “our”) and Rocket Lab USA, Inc. (“Rocket Lab”). This Presentation is for discussion purposes only and does not constitute an offer to purchase nor a solicitation of an offer to sell shares of Vector, Rocket Lab or any successor entity of the Transaction, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. This Presentation is not intended to form the basis of any investment decision by the recipient and does not constitute investment, tax or legal advice. No representation, express or implied, is or will be given by Vector, Rocket Lab or their respective affiliates and advisors as to the accuracy or completeness of the information contained herein, or any other written or oral information made available in the course of an evaluation of the Transaction. This Presentation provided by Vector and Rocket Lab may contain certain “forwardlooking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, including statements regarding Vector’s, Rocket Lab’s on their management teams’ expectations, hopes, beliefs, intentions or strategies regarding the future. The words “anticipate”, “believe”, “continue”, “could”, “estimate”, “expect”, “intends”, “may”, “might”, “plan”, “possible”, “potential”, “predict”, “project”, “should”, “would” and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. These forward-looking statements are based on Vector’s and Rocket Lab’s current expectations and beliefs concerning future developments and their potential effects on Vector, Rocket Lab or any successor entity of the Transaction. Many factors could cause actual future events to differ materially from the forward-looking statements in this presentation, including but not limited to: (i) the risk that the Transaction may not be completed in a timely manner or at all, which may adversely affect the price of Vector’s securities, (ii) the failure to satisfy the conditions to the consummation of the Transaction, including the adoption of the Agreement and Plan of Merger by the shareholders of Vector, (iii) the occurrence of any event, change or other circumstance that could give rise to the termination of the Agreement and Plan of Merger, (iv) the effect of the announcement or pendency of the Transaction on Rocket Lab’s business relationships, operating results and business generally, (v) risks that the Transaction disrupts current plans and operations of Rocket Lab, (vi) changes in the competitive and highly regulated industries in which Rocket Lab plans to operate, variations in operating performance across competitors, changes in laws and regulations affecting Rocket Lab’s business and changes in the combined capital structure, (vii) the ability to implement business plans, forecasts and other expectations after the completion of the Transaction, and identify and realize additional opportunities, and (viii) the risk of downturns in the commercial launch services, satellite and spacecraft industry. There can be no assurance that the future developments affecting Vector, Rocket Lab or any successor entity of the Transaction will be those that we have anticipated. These forward-looking statements involve a number of risks, uncertainties (some of which are beyond Vector’s or Rocket Lab’s control) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements. Except as required by law, Vector and Rocket Lab are not undertaking any obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise. All rights to the trademarks, copyrights, logos and other intellectual property listed herein belong to their respective owners and Vector’s or Rocket Lab’s use thereof does not imply an affiliation with, or endorsement by the owners of such trademarks, copyrights, logos and other intellectual property. Solely for convenience, trademarks and trade names referred to in this Presentation may appear with the ® or ™ symbols, but such references are not intended to indicate, in any way, that such names and logos are trademarks or registered trademarks of Vector. Use of Projections. The financial and operating forecasts and projections contained herein represent certain estimates of Rocket Lab as of the date thereof. Neither Vector’s nor Rocket Lab’s independent public accountants have examined, reviewed or compiled the forecasts or projections and, accordingly, neither expresses an opinion or other form of assurance with respect thereto. Furthermore none of Vector, Rocket Lab nor their respective management teams can give any assurance that the forecasts or projections contained herein accurately represents Rocket Lab’s future operations or financial conditions. Such information is subject to a wide variety of significant business, economic and competitive risks and uncertainties, including but not limited to those set forth in the second paragraph above that could cause actual results to differ materially from those contained in the prospective financial information. Accordingly, there can be no assurance that the prospective results are indicative of the future performance of Vector or Rocket Lab or that actual results will not differ materially from those presented in the prospective financial information. Some of the assumptions upon which the projections are based inevitably will not materialize and unanticipated events may occur that could affect results. Therefore, actual results achieved during the periods covered by the projections may vary and may vary materially from the projected results. Inclusion of the prospective financial information in this presentation should not be regarded as a representation by any person that the results contained in the prospective financial information are indicative of future results or will be achieved. This Presentation contains statistical data, estimates and forecasts that are based on independent industry publications or other publicly available information. This information involves many assumptions and limitations and you are cautioned not to give undue weight to these estimates. We have not independently verified the accuracy or completeness of the data that has been contained in these industry publications and other publicly available information. Accordingly, none of Vector, Rocket Lab nor their respective affiliates and advisors makes any representations as to the accuracy or completeness of these data. This Presentation contains references to Rocket Lab’s achievements compared to other companies, including being the first to achieve certain milestones. All of such references are based on the belief of Rocket Lab’s management based on ubliclyavailable information known to Rocket Lab’s management. Non-GAAP Financial Measures. The financial information and data contained in this Presentation is unaudited and does not conform to Regulation S-X promulgated under the Securities Act of 1933, as amended. This Presentation also includes non-GAAP financial measures. Vector and Rocket Lab believe that these non-GAAP measures of financial results provide useful information to management and investors regarding certain financial and business trends relating to Rocket Lab’s financial condition and results of operations. Rocket Lab’s management uses certain of these non-GAAP measures to compare Rocket Lab’s performance to that of prior periods for trend analyses and for budgeting and planning purposes. Not all of the information necessary for a quantitative reconciliation of these forward-looking non-GAAP financial measures to the most directly comparable GAAP financial measures is available without unreasonable efforts at this time. Specifically, Rocket Lab does not provide such quantitative reconciliation due to the inherent difficulty in forecasting and quantifying certain amounts that are necessary for such reconciliations, including net income (loss), accelerated depreciation and variations in effective tax rate. This Presentation relates to a proposed transaction between Rocket Lab and Vector. This Presentation does not constitute an offer to sell or exchange, or the solicitation of an offer to buy or exchange, any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, sale or exchange would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. Vector and Rocket Lab intend to file a registration statement on Form S-4 with the U.S. Securities and Exchange Commission (the “SEC”), which will include a document that serves as a joint prospectus and proxy statement, referred to as a proxy statement/ prospectus. A proxy statement/prospectus will be sent to all Rocket Lab and Vector shareholders. Rocket Lab and Vector will also file other documents regarding the proposed transaction with the SEC. Before making any voting decision, investors and security holders of Rocket Lab and Vector are urged to read the registration statement, the proxy statement/prospectus and all other relevant documents filed or that will be filed with the SEC in connection with the proposed transaction as they become available because they will contain important information about the proposed transaction. Investors and security holders will be able to obtain free copies of the registration statement, the proxy statement/prospectus and all other relevant documents filed or that will be filed with the SEC by Rocket Lab and Vector through the website maintained by the SEC at www.sec.gov. The documents filed by Vector with the SEC also may be obtained free of charge upon written request to Vector Acquisition Corporation, One Market Street, Steuart Tower, 23rd Floor, San Francisco, CA 94105. The documents filed by Rocket Lab with the SEC also may be obtained free of charge upon written request to Rocket Lab USA, Inc., 3881 McGowen Street, Long Beach, CA 90808. Participants in the Solicitation. Rocket Lab, Vector and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from Vector’s shareholders in connection with the proposed transaction. A list of the names of such directors, executive officers, other members of management, and employees, and information regarding their interests in the business combination will be contained in Vector’s filings with the SEC, including Vector’s Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2020, which was filed with the SEC on November 16, 2020, and such information and names of Rocket Lab’s directors and executive officers will also be in the Registration Statement on Form S-4 to be filed with the SEC by Rocket Lab and Vector, which will include the proxy statement of Vector Additional information regarding the interests of such potential participants in the solicitation process will also be included in the registration statement (and will be included in the definitive proxy statement/ prospectus) and other relevant documents when they are filed with the SEC. DISCLAIMER AND FORWARD LOOKING STATEMENTS 2 Rocket Lab USA

• 3. Space has defined some of humanity’s greatest achievements, and it continues to shape our future. I’m motivated by the enormous impact we can have on Earth by making it easier to get to space and to use it as a platform for innovation, exploration, and infrastructure. We go to space to improve life on Earth.” Peter J. Beck Founder, CEO, Chief Engineer, Adjunct Professor FROM THE FOUNDER 3 Rocket Lab USA

• 4. Today’s Presenters ROCKET LAB VECTOR ACQUISITION CORPORATION Peter Beck Founder, CEO, Chief Engineer Adam Spice Chief Financial Officer Alex Slusky CEO, Vector Acquisition Corporation CIO, Founder, and Managing Director, Vector Capital 4 Rocket Lab USA

• 5. Vector Capital Overview OUR PEDIGREE Tech-only Investment Fund 25-Year Track Record HIGHLIGHTS Executing Accretive Acquisitions Sales, Operations, Strategy $3B+ 40+ 100+ 39% Our Value Add for Rocket Lab Capital Under Management Investing and Operating Professionals Tech Companies Acquired Since 1997 Gross IRR Since Inception $320M SPAC 5 Rocket Lab USA

• 6. CONTENTS Rocket Lab Overview & Introduction SECTION SECTION SECTION SECTION 01 02 Launch 03 Space Systems 04 Transaction Overview & Financials 6 Rocket Lab USA

• 7. 01 SECTION ROCKET LAB OVERVIEW & Introduction 7 Rocket Lab USA Section 1

• 8. & In the history of spaceflight, only two private companies have delivered regular and reliable access to orbit 8 Rocket Lab USA Section 1

• 9. Delivering end-to-end space solutions IN UNDER 6 YEARS of our own satellites on orbit (+ more to come) 1 3 Launch pads built 18 Launches to space 2 Factories built Most frequently launched U.S. rocket 2ND 2 Mission control centers Recovered rocket 1 Rocket lab at a glance Launch: Proven rocket delivering dedicated access to orbit for 3+ years Space Systems: Manufacturing satellites and best-in-class heritage spacecraft components Space Applications: Uniquely positioned to leverage launch and satellite capabilities and infrastructure to build and operate our own constellations A vertically integrated provider of small launch services, satellites and spacecraft components 1 Strategic acquisition 3 Interplanetary missions scheduled (Moon, Mars, Venus) 7 Successful missions for USG customers 1 Awarded propellant depot mission on orbit for NASA Satellites deployed to orbit 97 9 Rocket Lab USA Section 1

• 10. Rocket Lab is way out in front LAUNCH COMPLEX 1MAHIA, NEW ZEALAND ELECTRON LIFT-OFF LAUNCH COMPLEX 1 Large, Rapidly Growing Market › Unprecedented commercial investment and government expenditures are driving rapid growth in the space economy › Market forecast to grow to $1.4T by 20301 Pioneer with Commanding Leadership Position Proven Business Execution Expanding Scope & Seizing Growth Opportunities Attractive Financial Model Successful Executive Team Driving Innovation › One of only two commercial companies delivering regular access to orbit › Strong first-mover advantage in small launch category › 18 launches since 2017 with cadence increasing › Rocket Lab-built satellites and components on orbit › Extensive launch and development facilities across U.S. and NZ › Aggressive organic and inorganic expansion of Space Systems business › Missions scheduled to the Moon and Mars for NASA › Uniquely positioned to access expanding space applications TAM › Current bookings for 2021 represent 90% of $69M forecast revenue (96% Y/Y growth) › Forecast EBITDA positive in 2023 and cash flow positive in 2024 › Forecast crossing $1B revenue in 2026 › Peter Beck is a visionary in the space industry, leading Rocket Lab to a series of industry-defining firsts › Adam Spice has public company CFO credentials and deep M&A experience › Motivated and passionate team of 530 employees Uniquely compelling investment opportunity in a generational space leader 10 Rocket Lab USA Section 1 1 Wall Street Research

• 11. SPACE APPLICATIONS TAM ~$320B 1 › TAM growth driven by historic levels of demand for responsive small satellite launch and constellation deployments › Small satellite constellations will account for ~83% of all satellites launched by 2028 3 › Significant growth in small satellite mega constellations driven by demand for commercial Earth observation and telecom applications › DoD focused on resiliency of space infrastructure and satellite constellation deployment and replenishment › Increased focus from multiple governments on high value deep space planetary exploration and discovery missions › Market growth driven by demand for spacebased connectivity, Earth observation (including synthetic aperture radar, electro-optical and RF) and other services › Significant untapped potential for value-added services including data management & analytics to support end customer insights Launch Electron & Neutron TAM ~$10B 2 SPACE SYSTEMS Photon TAM ~$20B 2 123 $350B+ TAM forecast to grow to $1.4T by 2030 1 Uniquely positioned to exploit a growing market PHOTONROCKET LAB PRODUCTION COMPLEX ELECTRON LIFT OFFLAUNCH COMPLEX 1 11 Rocket Lab USA Section 1 1 Wall Street Research 2 Allied Market Research 3 Bryce Reports

• 12. 1 st WORLD LEADING TECHNOLOGY PRODUCTION COMPLEX AUCKLAND, NEW ZEALAND ELECTRON LIFT-OFF LAUNCH COMPLEX 1, 2020 1 st 1 st 1 st FIRST Unique Only FIRST 3D printed rocket engine Rocket that converts to a satellite on orbit Private interplanetary mission And only private orbital launch site Electric-pump -fed rocket engine Reusable small launch vehicle Fully carbon composite launch vehicle Kick Stage enabling in-space transportation PHOTON ENCAPSULATION LAUNCH COMPLEX 1, 2020 Large technology moat 12 Rocket Lab USA Section 1

• 13. vertically integrated space company From raw material to orbit Rocket Lab HQ Space Systems Mission Control U.S. Sinclair Interplanetary by Rocket Lab Launch Complex 2 Global Tracking Systems Auckland Production Complex Propulsion Test Complex Mission Control New Zealand Launch Complex 1 1 4 5 7 2 3 8 6 1 3 5 7 2 4 6 8 13 Rocket Lab USA Section 1

• 14. PROVEN TEAM EXECUTIVE LEADERSHIP led by industry veterans Peter Beck Founder, CEO, Chief Engineer Lachlan Matchett VP – Propulsion Adam Spice Chief Financial Officer Shaun D’Mello VP – Launch Shaun O’Donnell EVP – Global Operations Ehson Mosleh Space Systems Chief Engineer Robbie Hurwitz Senior Legal Counsel Morgan Bailey Head of Communications Lars Hoffman SVP – Global Launch Services Doug Sinclair Space Systems Engineering Fellow Richard French, Director – Business Development & Strategy Space Systems Shane Fleming, VP – Global Commercial Launch Services 14 Rocket Lab USA Section 1

• 15. Our execution history We do what we say we will do Launch 6 YEARS 2014 2019 2020 2020 2020 Space Systems 1 YEAR Space Applications 0.5 YEARS 1st venture capital raised Photon program announced First Rocket Lab satellite on orbit Acquired Sinclair Interplanetary Positioned to provide space data to the market Awarded NASA CAPSTONE mission to the Moon Awarded NASA propellant depot mission in LEO Developed multiple Rocket Lab satellite components KSAT partnership First Photon launched Scheduled missions to the Moon (2021), Venus (2023) and Mars (2024) NZ launch site built 1st flight to orbit Factory built to support 1 rocket per week production First NRO launch Successful reuse mission U.S. launch site built Monthly launch cadence into 2021 4th most frequent launcher in the world in ‘19 & ‘20 FIRST NASA MISSION 2018 PHOTON FIRST LIGHTNOVEMBER 2020 ELECTRON LIFT-OFFMAHIA, NEW ZEALAND 2018 15 Rocket Lab USA Section 1

• 16. LAUNCH 02 SECTION 16 Rocket Lab USA Section 2

• 17. dedicated small launch is critical Not all space access is the same Small satellites face costly delays when flying rideshare on large rockets due to low launch frequency Rocket Lab delivers the first dedicated ride to orbit for small satellites, providing customers control over launch schedule and enabling tailored orbits that cannot be matched by large rocket rideshare Ability to control launch time down to the second Small satellite customers in control of exact orbits. Wide range of launch azimuths 132 launch slots every year (more than all U.S. launch sites combined) Strategically critical for military space resilience and commercial constellation replenishment SCHEDULE CONTROL Tailored orbits Frequent launch Launch On demand Large rockets do not provide adequate control for many small satellite orbital destinations More than 50% of small satellites launched in the past 5 years were delayed from 4 months to 2 years 17 Rocket Lab USA Section 2

• 18. Meet electron SIGNIFICANT technology moats 971st 132 180 Satellites deployed to orbit to date Powered by the world’s first 3D printed and electricpump-fed rocket engine technology, backed by a growing IP portfolio and patent filings Tailored for satellites up to 300 kg (660 pounds) payload class 3D printed engines delivered to space Launch opportunities every year across 3 launch pads Designed for manufacturability and reliability Carbon composite orbital launch vehicle in the world Unique Kick Stage standard with every launch to provide industry-leading precision and flexibility Fairing Payload plate Kick stage SECOND stage RUTHERFORD VACUUM ENGINE 9x Rutherford Sea Level Engines INTERSTAGE FIRST STAGE Power Pack ELECTRONPRODUCTION COMPLEX ELECTRON ON LAUNCH PADLAUNCH COMPLEX 1 ELECTRON LAUNCH COMPLEX 1 18 Rocket Lab USA Section 2

• 19. 2nd most frequently launched rocket in the U.S. 1 CHINA 2 RUSSIA 3 SPACEX 1 SPACEX 4 ROCKET LAB 5 EUROPE 6 JAPAN 2 ROCKET LAB 5 Synspective | Str Xi -α The owl s' n gi ht begins rocket lab 4th most frequent launcher globally MAY 2017 JUNE 2019 JULY 2020 JANUARY 2018 AUGUST 2019 AUGUST 2020 NOVEMBER 2018 OCTOBER 2019 OCTOBER 2020 DECEMBER 2018 DECEMBER 2019 NOVEMBER 2020 MARCH 2019 JANUARY 2020 DECEMBER 2020 MAY 2019 JUNE 2020 JANUARY 2021 19 Rocket Lab USA Section 2

• 20. only two private companies are delivering regular and reliable access to orbit Rocket Lab is the Small Launch LEADER Company Successful Orbital Launches Satellites Delivered to Orbit Capital Raised to Date1 In-house Satellite Program Rocket Lab 16 97 $275M Virgin Orbit 1 9 $1B Firefly 0 0 ~$210M Relativity 0 0 ~$685M Astra 0 0 $100M 1 PitchBook, Press, Investor Materials Rocket Lab scaled to a monthly launch cadence faster than any OTHER commercial launch provider 20 Rocket Lab USA Section 2

• 21. Our customers 18 missions, 97 satellites deployed for more than 20 organizations DEFENSE ~20% ~30% ~50% CIVIL COMMERCIAL 2 Missions 1 Mission (upcoming) 4 Missions 1 Mission 2 Missions 1 Mission 1 Mission 2 Missions 1 Mission 1 Mission 1 Mission 3 Missions 3 Missions 1 Mission 2 Missions 2 Missions 1 Mission 1 Mission 2 Missions 2 Missions 21 Rocket Lab USA Section 2

• 22. STATE OF THE ART MANUFACTURING PRODUCTION HQ LONG BEACH, U.S. Production facilities capable of producing a rocket every week PRODUCTION COMPLEXAUCKLAND, NEW ZEALAND PRODUCTION COMPLEX AUCKLAND, NEW ZEALAND PRODUCTION HQLONG BEACH, U.S. R&D and manufacturing facilities across the U.S., NZ and Canada All production scaling investments and infrastructure complete ~90% vertically integrated. Engines, vehicle structures, avionics, guidance sets and flight termination hardware produced in-house Extensive automation incl. 3D printing and custom robotic processing. Largest robotic machining center in the Southern Hemisphere 22 Rocket Lab USA Section 2

• 23. Launch Complex 1 New Zealand Launch Complex 2 Virginia, U.S. Unrivaled launch infrastructure 3 launch pads across 2 countries LAUNCH COMPLEX 1MAHIA, NEW ZEALAND LAUNCH COMPLEX 2VIRGINIA, U.S. 132 launch slots annually (more than all U.S. ranges combined) Critical national infrastructure asset for U.S. government customers Dedicated integration and control facilities The only bilateral treaty that allows U.S. launch vehicles to launch outside of the U.S. 24-hr rapid call-up launch for defense needs and constellation replenishment World’s only private, FAAlicensed orbital launch site 23 Rocket Lab USA Section 2

• 24. Electron is the only reusable orbital-class small rocket REUSABILITY THE KEY TO LAUNCH FREQUENCY MID-AIR CAPTUREMARCH 2020 ELECTRON RECOVERY TESTINGNOVEMBER 2020 One of only two companies to successfully bring back an orbitalclass booster from space Enables higher launch frequency without expanding production First re-flight of a full booster scheduled for 2022 Components from first recovered booster already scheduled for re-flight 24 Rocket Lab USA Section 2

• 25. Small Launch was the beginning The market needs a constellation LAUNCHER of the small satellites launched by 2028 will be constellation missions 83% 1 220 1 2 3 4 20 11 7.7 1 Euroconsult 2 Space News There is currently no commercial medium lift class launch vehicle to meet this demand Example: Telesat Lightspeed broadband constellation2 Satellites need launch (700kg each) Different orbital planes required SATELLITES per plane TONS per launch Constellation satellites need to be launched in batches to different orbital planes. Large rockets don’t solve this An analysis of large constellations points to an 8-ton class rocket as the ideal lift capacity 8t 25 Rocket Lab USA Section 2

• 26. Next Step: NEUTRON ELECTRON (SMALL LIFT) SPaceX, FALCon 9 (LARGE LIFT) NEUTRON (MEDIUM LIFT) NEW ROCKET DEVELOPMENT 8-Ton PAYLOAD CAPACITY › Rocket Lab solved small launch with Electron › Neutron solves medium launch E l e c t r o n N e u t r o n Tailored for commercial and DoD constellation launches Highly disruptive lower costs by leveraging Electron’s heritage, launch sites and architecture Direct alternative to SpaceX Falcon 9 ~$200M development program. First launch 2024 Reusable-ready platform after test program completion Capable of human space flight and crew resupply to the ISS 1 Euroconsult, Northern Sky Research 98% 2% E L E C T R O N & NEUTRON CLASS OTHER CLASS Rocket Lab can lift 98% of all satellites forecast to launch through 20291 18M 40M 63M 26 Rocket Lab USA Section 2

• 27. 03 SECTION SPACE SYsTEMS 27 Rocket Lab USA Section 3

• 28. Space Systems MANDATE 123 Satellites as a Service From LEO constellations to high-complexity deep space and interplanetary missions Satellite COMPONENTS Anything that goes to space should have a Rocket Lab logo on it SPACE APPLICATIONS Uniquely positioned to access expanding space applications TAM PHOTON PATHFINDER 1AUGUST 2020 PHOTON - CAPSTONEAUGUST 2020 28 Rocket Lab USA Section 3

• 29. PHOTON FIRST LIGHT MISSION AUGUST 2020 Customers no longer have to build their own satellite. They can buy a launch, satellite, ground services and on-orbit management in a turn-key package PHOTON: LOW EARTH ORBIT SATELLITES AS A SERVICE PHOTON FIRST LIGHT MISSIONAUGUST 2020 Operational Photon satellite is on orbit now and functioning flawlessly Every time Rocket Lab launches a customer mission, Photon is a free “stowaway” satellite Forms the satellite platform for our own constellations Awarded NASA propellant depot mission Strong market uptake in satellite as a service model across USG and commercial customers Unique ability to control schedule and costs 29 Rocket Lab USA Section 3

• 30. PHOTON INTERPLANETARY SPACECRAFT FOR NASA CAPSTONE LUNAR MISSION 2021 UPCOMING VENUS MISSION 2023 Rocket Lab goes everywhere in the solar system. Interplanetary Photon is a high-energy stage capable of going to the Moon, planets, asteroids and beyond PHOTON: Interplanetary spacecraft AS A SERVICE No other small, high-performance platform currently in the market 1 Photons can fly on Electron or any other rocket Strong market traction to date with multiple NASA deep space missions 30 Rocket Lab USA Section 3

• 31. interplanetary missions Missions awarded and spacecraft developed MOON VENUS MARS Displacing LEGACY SPACE DISRUPTING THE MARKET mission to Mars Launching 2024 The mission will see Photon deliver a science payload to Mars to study the planet's atmosphere Awarded NASA CAPSTONE mission to the moon Launching 2021 As a precursor for Gateway, a Moon-orbiting outpost that is part of NASA’s Artemis program, CAPSTONE will help reduce risk for future spacecraft Rocket Lab’s Private mission to Venus to search for life Launching 2023 Rocket Lab will provide both the rocket and spacecraft - international research team will provide the probe and science instrument first to the moon 31 Rocket Lab USA Section 3

• 32. Satellite Components Mission-critical components for small and mega constellations Solar Panels Torque Rods Satellite Batteries Reaction Wheels Fibre Optic Network Switches Star Trackers Secures supply chain for Rocket Lab-built satellites and spacecraft Strengthened by the acquisition of Sinclair Interplanetary in 2020 Disruptive highvolume manufacturing of critical satellite components at scale prices Growing demand from mega constellations Awarded contract to supply reaction wheels to mega constellation Everything that goes to space should have a Rocket Lab logo on it 32 Rocket Lab USA Section 3

• 33. Uniquely positioned to create a new multi-billion-dollar business vertical Rocket Lab is in a unique position to complete the final move up the value chain to provide data and services to the market by leveraging Electron, Neutron, and Photon, further unlocking the ~$1.4T TAM1 by 2030 Rocket Lab’s in-house launch and space systems capabilities provide significant competitive advantages in the space applications market 33 Rocket Lab USA Section 3 1 Wall Street Research

• 34. SECTION 04 Transaction Overview & Financials 34 Rocket Lab USA Section 4

• 35. Transaction overview › Fully diluted pro forma enterprise value of $4.1B, representing 5.4x 2025E revenue of $749M › Existing Rocket Lab shareholders will receive 82% of the pro forma equity › Transaction will result in $745M of cash to the balance sheet to fund growth › Funded by a combination of cash in Vector’s trust account and PIPE proceeds Sources $M Existing Rocket Lab Shareholders 3,960 Vector SPAC Cash in Trust1 320 PIPE Equity2 467 Rocket Lab Existing Cash3 48 Total Sources $4,795 Uses $M Existing Rocket Lab Shareholders 3,960 Cash to Balance Sheet 745 Cash to Existing Shareholders6 40 Estimated Fees & Expenses 50 Total Uses $4,795 Pro Forma Valuation Share Price at Closing $10.00 PF Shares Outstanding (M) 4, 5, 6 482.7 Equity Value ($M) $4,827 (-) PF Net Cash ($M)6 (745) Enterprise Value ($M) $4,082 Pro Forma Ownership5 Existing Rocket Lab Shareholders PIPE Investors 82% 10% SPAC Sponsor <2% SPAC Investors 7% 1 Assumes no redemptions from existing public shareholders. 2 Assumes 46.7M shares issued at $10.00 per share. 3 $48M of cash and cash equivalents estimate for March 31, 2021 4 Pro forma share count includes 396.0M shares to be issued to existing Rocket Lab shareholders or potentially issuable to holders of vested and unvested stock options, other equity awards and other contingent obligations of Rocket Lab, 46.7M shares to PIPE investors, 32.0M shares to SPAC investors, and 8.0M shares to SPAC sponsor. Assumes new shares issued at $10.00 5 Share count excludes: i) 10.7M public warrants (strike price of $11.50 and redeemable at $18.00 / share); ii) 5.6M Sponsor warrants (with strike price of $11.50); iii) existing shareholder earnout shares equal to 8% of Common Stock held by the existing shareholders at closing (composed of a single tranche with target price of $20.00 per share and vested if stock trades at or above $20.00 for any 20 of 30 days occurring between 90 and 180 days post close). 35 Rocket Lab USA Section 4 6 Assumes 4.0M shares otherwise issuable to existing Rocket Lab shareholders are redeemed at $10.00 per share

• 36. FINANCIAL MODEL SUMMARY Historical and projected revenue › Current bookings for 2021 represent 90% of forecast revenue1 › Existing customer relationships, frequency of repeat business and active opportunity pipeline of ~$2.2B provide confidence in long-term plan Space Systems ($M) Launch ($M) 1 Reflects approximately $16M reduction in estimated 2021 revenue recognition due to rescheduling by a US Government customer of two dedicated launches that had been scheduled for August of 2021, into January/February of 2022, due to delays from their satellite bus partner. Concurrently with the rescheduling, the customer informed Rocket Lab that it had awarded the Company an additional dedicated launch for 2022, which increased Rocket Lab’s total backlog by approximately $8.5M 2 Total cumulative billings associated with launches completed in 2018, 2019 and 2020 were approximately $7M, $34M and $39M, respectively. Total cumulative billings for launches to be conducted in 2021 are expected to be $59M Sum: ~$2.2B Launch Current Active Pipeline Space Systems Bundled Launch + Photon Components $1.2B $447M $386M $181M $69 2021E $35 2020E2 2019 $48 2018 $13.5 $176 2022E 2023E $267 $141 $126 2024E $450 $218 $232 2027E $1,571 $915 $656 2025E $749 $399 $350 2026E $1,159 $658 $501 $20 $2 $49 $61 $115 $33 36 Rocket Lab USA Section 4

• 37. Historical and projected adjusted EBITDA ($M) Historical and projected UFCF ($M)1 › Adjusted EBITDA breakeven is expected in 2023E with significant EBITDA ramp thereafter as the company scales operations › Significant free cash flow generation driven by adjusted EBITDA growth and minimal maintenance capital expenditure FINANCIAL MODEL SUMMARY 2019 ($40) 2018 ($47) 2019 ($24) (49%) 2018 ($32) (238%) Adjusted EBITDA Margin (102%) ($36) 2020E ($45) 2020E (69%) ($48) 2021E ($76) 2021E (11%) ($20) 2022E ($73) 2022E 10% $26 2023E ($11) 2023E 26% $119 2024E $97 2024E 22% $168 2025E $149 2025E 29% $340 2026E $311 2026E 32% $505 2027E $465 2027E 1 Unlevered free cash flow is defined as adjusted EBITDA minus capital expenditures minus increases in working capital Note: Adjustments to EBITDA include share-based compensation, foreign exchange gains or losses, and non-recurring losses, including the impact of retaining employees during COVID-19 shutdowns 37 Rocket Lab USA Section 4

• 38. highly compelling OPPORTUNITY Successful launches with payloads deployed Total payload deployment revenue to date1 Note: Market Data as of 2/26/2021 Source: Company Filings, Bloomberg, FactSet, Press Reports 1 Assumes peer revenues are recognized at launch. For Rocket Lab includes 2018, 2019, 2020E and January 2021E 1st successful commercial launch (year) $2.3 $4.1 $74.0 = TEV ($B) = Current TEV ($B) N/A N/A N/A 2018 2009 16 $105M 106 DATA NOT AVAILABLE 0 0 $0 $0 0 $0 $3.2 $2.1 › Rocket Lab represents a unique opportunity for public investors to invest in the market-leading small launch and space systems company $1.2 $2.2 38 Rocket Lab USA Section 4

• 39. valuation and operational benchmarking $4.1 TEV / 2025E Revenue TEV / 2025E EBITDA (adj) TEV ($B): Revenue CAGR (2023-2025E) EBITDA (adj) margin (2025E) $8.6 $8.8 $23.6 $3.4 $4.4 $8.4 18.0x 44.3x 5.6x 4.6x 1.8x 0.8x 2.5x 2.1x 1.1x 0.8x $1.4 MEDIAN: 2.1x MEDIAN: 4.6x MEDIAN: 7.4X MEDIAN: 29.3x Leading Technology SPACs SPACE SPACs $3.2 $2.2 $2.1 5.4x 24.3x 11.6x 8.7% 149.8% 22.4% 67.6% 37.8% 68.6% 25.2%5 807.2%4 32.9% 36.9% 21.0% 75.0% 40.6%6 38.6% 44.7% 46.2% 56.5% 142.1% 61.3% 81.0% 97.5% 280.8% 101.8x 8.9x 30.7x 29.3x 19.9x 8.1x 7.4x 6.6x 1 .7x Note: Market data as of 2/26/2021. For SPAC transactions that have closed, TEV is based on latest available filing. For SPAC transactions announced but not yet closed, TEV is based on the investor presentation or latest S-1 available (1) ChargePoint, Proterra, BlackSky, Astra, Momentus and AST SpaceMobile have been announced but not yet closed. (2) QuantumScape represents 2027E multiple. (3) Virgin Galactic represents 2024E multiple (4) QuantumScape represents 2025E –2027E revenue CAGR. (5) QuantumScape represents 2027E EBITDA margin. (6) Virgin Galactic represents 2024E EBITDA margin. Source: FactSet, Wall Street Research, Public Filings 1 1 2 1 2 1 3 3 1 1 1 1 1 1 1 1 39 Rocket Lab USA Section 4

• 40. For more information watch the Rocket Lab story here PLAY VIDEO