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Block vs SpaceX: Founders, CEOs and History

Block was founded in 2009 by Jack Dorsey, Jim McKelvey and is led by Jack Dorsey. SpaceX was founded in 2002 by Elon Musk and is led by Elon Musk.

Company facts

Block

Founded
2009
Headquarters
Oakland, California
Current CEO
Jack Dorsey
Employees
10,205

SpaceX

Founded
2002
Headquarters
Starbase, Texas; major operations in Hawthorne, California
Current CEO
Elon Musk
Employees
22,621

Founders

Block

  • Jack Dorsey

    Dorsey co-founded Square in 2009 with Jim McKelvey after McKelvey lost a glass sale he could not take by card, and has run the company ever since: through the 2015 IPO, the rise of Cash App, the December 2021 rename to Block, the Afterpay purchase and, in Febr…

  • Jim McKelvey

    McKelvey's lost $2,000 glass sale is Square's origin story. He worked with Dorsey and engineer Tristan O'Tierney on the first reader and the flat-pricing business model, and later wrote 'The Innovation Stack' (2020), which explains how Square survived copycats…

Block founders in full

SpaceX

  • Elon Musk

    Elon Reeve Musk was born on June 28, 1971, in Pretoria, South Africa, and emigrated to Canada at age 17 before transferring to the University of Pennsylvania, where he earned dual degrees in economics and physics.

SpaceX founders in full

CEOs and their tenures

Block

  1. Jack Dorsey2009–present

    Co-Founder, Block Head and Chairman (Chief Executive)

    Has led Square and Block since 2009: the 2015 IPO, the growth of Cash App, the 2021 rename to Block, the Afterpay purchase, bitcoin projects such as Bitkey and Proto, and the February 2026 cut to just under 6,000 employees.

    Source
  2. Alyssa Henry2014–2023

    Seller Lead, then Chief Executive of the Square business

    Joined from Amazon in 2014 as seller lead and became chief executive of the Square business when the parent was renamed Block in December 2021.

    Source
Block CEO history in full

SpaceX

  1. Elon Musk2002–present

    Founder, CEO & Chief Engineer

    Under Musk, SpaceX became the highest-cadence launch provider and built Starlink into its largest revenue segment. He led the company through its June 12, 2026 IPO, priced at $135 per share and raising $85.7 billion.

    Source
  2. Gwynne Shotwell2002–present

    President and Chief Operating Officer

    As President and COO since 2008, she has managed day-to-day operations and strategic customer relationships, guiding the company to unprecedented launch cadences and billions in recurring Starlink revenues.

    Source
SpaceX CEO history in full

Timeline: Block and SpaceX side by side

  1. 2002SpaceX

    SpaceX is founded

    Elon Musk founded Space Exploration Technologies Corp. to reduce launch costs and make Mars settlement technically possible.

  2. 2008SpaceX

    Falcon 1 reaches orbit

    Falcon 1 became the first privately developed liquid-fuel rocket to reach orbit, rescuing SpaceX after three failed attempts.

  3. 2009Block

    Square founded in St. Louis

    Jack Dorsey and Jim McKelvey start Square in February 2009 after McKelvey loses a $2,000 glass sale because he cannot take an American Express card. With engineer Tristan O'Tierney they build a reader that plugs into a phone's headphone jack.

  4. 2010Block

    Square reader and app go public

    Square releases its free card reader and app, letting individuals and small sellers take card payments on a smartphone at one published rate instead of signing a bank merchant contract.

  5. 2011Block

    Visa invests in Square

    Visa makes a strategic investment in Square in April 2011, a sign the card networks saw the startup as widening card acceptance rather than threatening it.

  6. 2012Block

    Starbucks deal

    Starbucks invests $25 million and Square starts processing card payments at about 7,000 U.S. Starbucks stores, with Dorsey joining the Starbucks board.

  7. 2012SpaceX

    Dragon reaches the ISS

    Dragon became the first private spacecraft to dock with the International Space Station, proving SpaceX could serve NASA cargo missions.

  8. 2013Block

    Square Cash launches

    Square launches Square Cash in October 2013, letting people send money to each other by email. It later becomes Cash App.

  9. 2014Block

    Square Capital and Caviar

    Square starts lending to its own sellers through Square Capital in May 2014, with repayments taken as a share of daily card sales, and buys food delivery service Caviar.

  10. 2015Block

    IPO on the New York Stock Exchange

    Square lists on the NYSE as SQ on November 19, 2015 at $9 a share, a valuation of about $2.9 billion, raising about $243 million.

  11. 2015SpaceX

    Falcon 9 booster landing

    SpaceX landed an orbital-class booster, establishing the technical base for reusable launch economics.

  12. 2017SpaceX

    Orbital booster reflight

    SpaceX reflown an orbital-class booster, pushing reuse from demonstration into operating model.

  13. 2018Block

    Cash App adds bitcoin; Square buys Weebly

    Cash App, which added the Cash Card debit card in 2017, lets users buy bitcoin from 2018, and Square buys website builder Weebly for $365 million. Commission-free stock investing follows in 2019.

  14. 2020Block

    Bitcoin treasury, Verse and Credit Karma Tax

    The FDIC approves deposit insurance for Square Financial Services in March 2020. Square buys Spanish payments app Verse in June, puts $50 million into 4,709 bitcoin in October, and agrees in November to buy Credit Karma Tax for $50 million.

  15. 2020SpaceX

    Crew Dragon carries astronauts

    SpaceX became the first private company to carry astronauts to orbit, restoring U.S. crew launch capability.

  16. 2021Block

    TIDAL purchase and Square's own bank opens

    Square Financial Services opens on March 1, 2021, and Square agrees the same month to buy a majority of the TIDAL music service for $297 million in cash and stock, with Jay-Z joining its board.

  17. 2021Block

    Afterpay deal announced

    Square agrees in August 2021 to buy Afterpay, the Australian buy now, pay later company, in an all-stock deal valued at about $29 billion.

  18. 2021Block

    Square becomes Block

    On December 10, 2021, Square, Inc. renames itself Block, Inc., shortly after Dorsey steps down as Twitter's chief executive. Square remains the name of the seller business.

  19. 2021SpaceX

    Acquired Swarm Technologies

    SpaceX acquired Swarm Technologies.

  20. 2022Block

    Afterpay acquisition closes

    Block completes the Afterpay purchase on January 31, 2022. Because it paid in its own shares, which had roughly halved since the announcement, the deal was worth much less at closing than the headline $29 billion.

  21. 2023Block

    Hindenburg report, Square leadership change and Bitkey

    Short seller Hindenburg Research accuses Cash App in March 2023 of inflated user metrics and weak compliance, which Block rejects.

  22. 2023SpaceX

    Starship flight testing begins

    SpaceX conducted the first integrated Starship flight test, starting the high-risk development cycle for its next launch system.

  23. 2024Block

    Proto mining chip and portfolio cuts

    Block says in April 2024 it has designed a 3-nanometer bitcoin mining chip, agrees in July to supply Core Scientific, and in November winds down its TBD crypto unit and scales back TIDAL.

  24. 2025Block

    Cash App settlements and the XYZ ticker

    In January 2025 the CFPB orders Block to pay up to $120 million in Cash App redress plus a $55 million penalty, state regulators impose an $80 million anti-money-laundering penalty, and the ticker changes from SQ to XYZ.

  25. 2025Block

    Block joins the S&P 500

    Block enters the S&P 500 on July 23, 2025, replacing Hess, and at its November investor day sets 2028 targets of about $15.8 billion of gross profit and $4.6 billion of adjusted operating income.

  26. 2025SpaceX

    FY2025 revenue reaches $18.674B

    SpaceX reported $18.674B in FY2025 revenue and a $4.937B net loss in its 2026 prospectus.

  27. 2026Block

    Workforce cut to under 6,000

    On February 26, 2026, Dorsey announces Block will shrink from more than 10,000 employees to just under 6,000, citing AI, and the shares jump about 24%.

  28. 2026SpaceX

    Prospectus lists SPCX and Starlink scale

    The 2026 prospectus described a Nasdaq listing under SPCX and about 10.3M Starlink subscribers as of March 31, 2026.

Acquisitions

Block

  • Afterpay2022$29B
  • TIDAL (majority stake)2021$297M
  • Credit Karma Tax (now Cash App Taxes)2020$50M
  • Verse2020Undisclosed
  • Weebly2018$365M
  • Caviar2014$90M
All Block acquisitions

SpaceX

  • xAI merger2026Undisclosed
  • Swarm Technologies2021Undisclosed
All SpaceX acquisitions

Questions about Block vs SpaceX

Who is the CEO of Block Inc and SpaceX?

Block Inc is led by Jack Dorsey and SpaceX is led by Elon Musk. Both serve as the top executive responsible for the company's strategy, operations, and financial performance.

When was Block Inc founded vs SpaceX?

SpaceX was founded in 2002 — 7 years before Block Inc, which was founded in 2009. SpaceX's longer operating history gives it a deeper track record but also potentially more institutional inertia compared to the younger Block Inc.

How many employees does Block Inc have compared to SpaceX?

Block Inc employs approximately 10,205 people, while SpaceX employs approximately 22,621. SpaceX has the larger workforce at 22,621 employees, compared to Block Inc's 10,205. A higher headcount does not necessarily imply greater efficiency — it often reflects differences in business model (e.g., manufacturing vs. software).

Where are Block Inc and SpaceX headquartered?

Both Block Inc and SpaceX are headquartered in United States, meaning they operate under the same primary regulatory and tax environment.

Who founded Block Inc and SpaceX?

Block Inc was founded by Jack Dorsey, Jim McKelvey. SpaceX was founded by Elon Musk.

Which company has a longer operating history — Block Inc or SpaceX?

SpaceX has been operating for approximately 24 years, making it the more established of the two companies. Block Inc has been in operation for around 17 years. A longer operating history often signals greater institutional resilience and brand recognition, though it can also mean slower adaptation to new market conditions.

Figures come from each company's filings and the sources linked beside them. Amounts reported in another currency are shown in US dollars at an approximate rate and marked with ~. Back to the Block vs SpaceX overview

Content is for informational purposes only. Not financial advice. Data sourced from SEC filings, annual reports, and public records. See our full disclaimer and methodology.