Jack Dorsey Net Worth: From Twitter Threads to Billion-Dollar Blocks

When people hear the name Jack Dorsey, they almost instinctively think of Twitter—the little blue bird that reshaped how the world communicates. But there’s a lot more to Jack’s story than 280-character tweets. In fact, while Twitter gave him worldwide recognition, the bulk of his fortune comes from another brainchild: Square, now known as Block Inc.

Let’s dive into the twists and turns of Jack Dorsey’s career, philanthropy, and financial empire as of 2025.

The Numbers: Jack Dorsey’s Net Worth in 2025

At 48 years old, Jack Dorsey is sitting on an impressive net worth of approximately $4 billion as of 2025. While many assume that Twitter made him a billionaire, it’s really Block Inc. (formerly Square) that accounts for the lion’s share of his fortune.

Currently, Jack holds around 43 million shares of Block, valued at approximately $2.5 billion. On top of that, he has about $1 billion in cash and other assets, thanks in part to his savvy investments and smart exits, including cashing out nearly $974 million when Elon Musk acquired Twitter back in 2022.

From St. Louis Kid to Silicon Valley Icon

Born in St. Louis, Missouri on November 19, 1976, Jack had an early fascination with how things connect. As a teenager, he wasn’t just playing video games—he was writing dispatch software for taxi companies. Fun fact? Some of that software is reportedly still in use today!

At 17, Jack famously hacked a New York City cab dispatch system—not maliciously, but as a “white-hat hacker” who alerted the company to its vulnerabilities. They offered him a job on the spot, a move that sparked his journey into tech and set him on a collision course with Silicon Valley.

Twitter: The Accidental Revolution

Twitter began almost as an afterthought during a brainstorming session in 2006 while Jack was working at Odeo, a podcasting startup led by Evan Williams. The group, which also included Biz Stone and Noah Glass, dreamed up a microblogging platform to share quick status updates.

That project evolved into what we now know as Twitter. Initially mocked by critics, Twitter became a cultural and political force, influencing everything from presidential campaigns to social movements worldwide. Dorsey, Twitter’s first CEO, was one of the masterminds behind its minimalist yet addictive format.

Despite leaving and rejoining Twitter multiple times over the years, Jack remained a central figure during the platform’s rise. When Elon Musk purchased Twitter in 2022 for $44 billion, Jack walked away with nearly $1 billion in cash after liquidating his 18 million shares.

Square to Block: The Bigger Fortune Builder

While Twitter gave Jack fame, Square, now Block Inc., is where he built real wealth. Co-founded in 2009 with Jim McKelvey, Square addressed a simple yet universal problem: small businesses struggling to accept credit card payments.

If you’ve ever swiped your card at a farmer’s market or a local coffee shop using one of those little square-shaped readers plugged into an iPad, you’ve interacted with Dorsey’s financial innovation.

Square went public in 2015, but by 2021, it had grown far beyond a simple payments processor. The company expanded into crypto, peer-to-peer transfers (through Cash App), and business financing. In February 2021, Square’s market cap surpassed $100 billion, pushing Jack’s net worth to north of $16 billion at the time.

Even after facing headwinds like the Hindenburg Research short-seller report in 2023—which slashed Block’s stock price and shaved over $500 million off Jack’s net worth—he remains deeply invested in the company’s success.

Philanthropy: The $1 Billion Promise

While Jack has built a fortune, he’s equally known for giving it away. In April 2020, he pledged to donate $1 billion (roughly 28% of his net worth at the time) to global causes like COVID-19 relief, girls’ education, and universal basic income. True to his transparent nature, Jack set up an LLC called Start Small, which tracks donations publicly via a spreadsheet.

Since then, Dorsey has donated hundreds of millions through Start Small, including major gifts to anti-racism organizations, pandemic relief efforts in India, and climate-focused charities. His approach is pragmatic—choosing to make direct donations, often without fanfare, and focusing on systemic change.

Jack the Minimalist: Unconventional CEO

Dorsey’s leadership style has always been unconventional. While most tech CEOs camp out in Silicon Valley headquarters, Jack has often been spotted meditating in Myanmar, walking barefoot around Block’s offices, or tweeting photos of his latest fast or ice bath routine.

His spiritual and minimalist lifestyle often draws curiosity—and criticism—from peers who think he spends too much time away from the grind of corporate leadership. Yet, despite his laid-back persona, no one can deny Jack’s impact on tech and finance.

Bluesky and the Decentralized Future

Never one to rest on his laurels, Jack has also championed decentralized social media. As a co-founder of Bluesky Social, a Twitter spin-off aimed at giving users more control and transparency over their feeds, Dorsey is trying to push back against big tech’s grip on information.

Bluesky is still in its early stages, but it speaks to Jack’s larger belief in open-source platforms and decentralized internet structures—a future where no single company or government controls the global flow of information.

In short, Jack Dorsey isn’t just a tech founder—he’s a cultural figure whose influence extends beyond Silicon Valley boardrooms into the everyday lives of millions.