Cal Henderson and Ryan Lance: Who They Are and Why the Two Names Are Searched Together

Cal Henderson and Ryan Lance are two unrelated business leaders. Henderson co-founded the workplace messaging platform Slack, and Lance leads one of the world’s largest independent oil and gas companies, ConocoPhillips. Searching their names together can lead to confusing results, so this guide explains who each man is and what is and isn’t documented. As of October 19, 2026, no verified professional or personal connection between them turned up in the sources reviewed.

Who is Cal Henderson?

Cal Henderson is a British-born software engineer and technology executive. He co-founded Slack and served as its chief technology officer, and earlier built and led the engineering team at Flickr through its acquisition by Yahoo. He studied for a Bachelor of Computer Science at the University of Central England, and was involved in London’s early online community through B3ta and his personal blog. TechCrunchTechCrunch

Cal Henderson and Ryan Lance career has a pattern. Cal Henderson and Ryan Lance one of the founding members of a team that turned a side project into a business twice. Flickr began as a side project that funded work on a web game, and in 2005 the team sold Flickr to Yahoo. After a later game, Glitch, was shut down, Slack was founded by Stewart Butterfield, Henderson and Serguei Mourachov. Cal Henderson: Slack CTO. Author. Science fiction fan. +2

Cal Henderson and Ryan Lance also an author. He wrote the O’Reilly book “Building Scalable Websites,” and was a pioneer in the use of web APIs. In 2019, he was named a Fortune 40 Under 40 honoree and recognized by the World Economic Forum as a Young Global Leader. TechCrunchsfelc

What happened to Cal Henderson at Slack?

Salesforce acquired Slack in 2021 for $27.7 billion. Henderson stayed on afterward. In January 2024, Fortune reported he was stepping down as CTO effective immediately but would remain at the company until March 1, and that Salesforce co-founder Parker Harris would replace him. Fortune noted that his exit left Slack without any of its co-founders. slack cto cal henderson out replaced salesforce cofounder parker harris +2

What is Cal Henderson doing now?

Cal Henderson and Ryan Lance has moved into angel investing. One investor-profile site, which was last updated June 7, 2026, describes him as an active angel investor since 2024 focused on developer tools and AI-native workflow products. Two examples from reporting: seedlist

• He was among the investors in Slashwork, Cal Henderson and Ryan Lance an AI workplace communications startup that raised $3.5 million. CNBC
• The same profile lists his most recent verified investment as the $75 million Series A for Viktor, an AI coworker agent that lives inside Slack and Teams, in May 2026. seedlist

Treat the investor-profile data as secondary. It’s a third-party aggregator, and the exact amounts and dates should be checked against company announcements before you rely on them.

Who is Ryan Lance?

Cal Henderson and Ryan Lance is an American petroleum engineer and executive. Cal Henderson and Ryan Lance was born May 21, 1962, in Blytheville, Arkansas, and has a Bachelor of Science in Petroleum Engineering from Montana Tech. He is best known as the long-serving head of ConocoPhillips. He served as chairman and chief executive officer from May 2012, and was appointed executive chairman in September 2026. Wikipediaconocophillips

Ryan Lance’s role at ConocoPhillips

The 2012 date matters. ConocoPhillips described him as setting the course for the newly formed independent company in 2012. The company announced a planned succession in 2026. On August 6, 2026, the board elected Andy O’Brien, the chief financial officer, as President and CEO effective September 1, 2026. Lance retired as President and CEO and became Executive Chair of the board. CONOCOPHILLIPS – Form 8-K – FY2026 +2

Lance’s last quarter as CEO was a strong one. ConocoPhillips reported second-quarter 2026 earnings of $3.9 billion, or $3.23 per share, and said it had doubled its share repurchases. sec

Other roles and recognition

Beyond ConocoPhillips, Lance serves on the board of the National Fish and Wildlife Foundation and as a trustee of the George and Barbara Bush Foundation and PGA Reach, and is chair of the National Petroleum Council. He joined the board of Freeport-McMoRan in November 2021, Cal Henderson and Ryan Lance and Energy Intelligence named him Energy Executive of the Year for 2025. conocophillipsfcx

Is there a connection between Cal Henderson and Ryan Lance?

Based on the sources reviewed, no. Searches for the two names together returned unrelated pages. A targeted search for a shared board seat or company link also found nothing. Their industries don’t overlap in anything I could document: Henderson works in software and startups, and Lance in energy.

Several explanations are possible, and none is confirmed:

• Someone may be comparing leaders from very different fields.
• A news item or event may have mentioned both names, and I couldn’t find it.
• Searchers may be mixing up people with similar names.

If you saw the two names together somewhere specific, the article should be updated around that source.

Key facts at a glance

• Cal Henderson: Slack co-founder, former CTO (stepped down January 2024, left March 1, 2024), now an angel investor.
• Ryan Lance: ConocoPhillips executive chairman since September 2026, previously chairman and CEO since 2012.
• Connection: none verified.

Conclusion

Cal Henderson and Ryan Lance are accomplished figures in very different fields. Henderson helped build Flickr and Slack, and Lance spent more than a decade leading ConocoPhillips. Unless a credible source shows a link between them, the accurate answer is that they are two separate people who happen to be searched together.