Who is Gwynne Shotwell, Elon Musk’s second-in-command at SpaceX?

In 2002, SpaceX founder Elon Musk poached Gwynne Shotwell as one of his earliest hires at the less-than-a-year-old startup.

Twenty-four years later, Shotwell leads the company’s day-to-day running as president and chief operating officer and rang the trading bell on the Nasdaq trading floor for the company’s blockbuster IPO on Friday. She’s also one of the largest individual shareholders in SpaceX, with her stake worth around $2 billion at market close on the stock’s debut on Friday.

CNBC spoke to four people who Shotwell worked with and said that, while Musk is the visionary behind the company’s direction, Shotwell is the one getting stuff done.

“While Elon’s setting the vision, she’s the one making sure it gets delivered,” Nathan Silvernail, who spent seven years at SpaceX as an engineer on projects like life support systems from 2014 to 2021, told CNBC.

“She handles the operational execution that actually keeps the business running and brings in the funding,” he said. Shotwell, Silvernail added, is the “one taking the meetings with customers, building those relationships, closing the contracts.”

Today, Shotwell, 62, oversees SpaceX’s 22,000-person full-time workforce, after steering the company’s early Falcon rocket development and contracts with NASA.

An engineer by background, Shotwell graduated from Northwestern University with a bachelor’s degree in mechanical engineering and a master’s in applied mathematics.

Originally hired as vice president of business development, Musk made Shotwell president in 2008.

SpaceX did not respond to a request for comment for this story, but Shotwell described her working relationship with Musk in a sit-down interview with CNBC, broadcast on Friday, the day of the IPO.

“When Elon asked me to be president we made very clear what is my job jar and what is his job jar,” Shotwell said.

“I feel like I’m there as a partner to help him get the things done that need to get done, and I tend to focus on the day-to-day of the business operations, and he focuses on high-level strategy, as well as super deep dive on the technical.”

Shotwell has managed everything from rocket development to the creation of Starlink and, more recently, the integration of xAI. She also talks to customers, regulators and, now, public investors. Shotwell is also one of the company’s eight board members.

“At the beginning, she sold launches when SpaceX wasn’t launching successfully and keeping the customers happy while launches slipped out,” said Kathryn Lueders, who spent more than 15 years as a program manager and administrator at NASA, working directly with Shotwell, before joining SpaceX as a general manager for two years, from 2023 to 2025.

“She has always been pulled in to be the steady interface for customers, stakeholders and the public,” added Lueders, who now advises space companies, including Germany’s The Exploration Company and space station company Vast.

SpaceX’s early Falcon 1 launches failed to reach orbit, but its fourth launch in 2008 saw it become the first privately developed liquid-fueled rocket to reach Earth orbit.

Phil McAlister, a director at NASA for more than 19 years, had meetings and conversations with Shotwell and Musk about the development of the reusable Falcon 9 launch vehicle and Crew Dragon capsule.

SpaceX used both to make history in 2020, when it became the first private company to transport astronauts to the International Space Station.

“I’ve never seen her dawdle when having to make a decision,” McAlister said of Shotwell.

“She collects the information available and moves forward, even if the information is incomplete,” he added. “However, she is willing to revisit decisions if events don’t play out as anticipated. I think that is unique among senior-level executives.”

According to SpaceX’s IPO filing last month, Shotwell’s compensation totaled $85.8 million in 2025, with the vast majority coming from options awards. Her base salary was $1.08 million.

Musk and Shotwell’s styles are complementary but completely different, McAlister said.

“Gwynne is extremely relatable. She is excellent at ‘reading the room’, making people feel comfortable, and knowing the right thing to say in just about any situation,” he told CNBC. “Elon is more mercurial. You never quite know what he is going to say, and sometimes conversations can be awkward with him.”

“Elon creates the urgent, sometimes uncomfortable disruption,” Derek Huerta, who worked as a satellite engineer at SpaceX from 2017 to 2024, told CNBC.

“She’s the one who absorbs it and turns it into execution, converting it into a plan thousands of engineers can actually march behind, smoothing things over and aligning people around the critical problem.”

Silvernail said he saw a pattern in meetings, when Musk was “throwing out raw ideas, sometimes scattered and unorganized.” Shotwell, he added, “translates it into something executable.”

“He’s the dreamer, but she’s the one doing the real digging,” he added.