I Left My $200M+ Rev/yr Startup to Build Safe AGI at Anthropic. Here's My Resignation Letter + 9-Step Exit Playbook
The complete founder exit guide nobody teaches as unicorn founders consider joining AI labs.
I left Super.com last year to join Anthropic and help build safe AGI.
The decision wasn’t easy, but the execution was even harder.
I realized thousands of articles exist on how to start a company, raise funding, build products, and scale teams, but when it comes to resigning and transitioning, there are little to no resources.
As AI continues to accelerate and consume SaaS, I’ve had dozens of unicorn founders reach out privately asking about resignation best practices.
Most don’t know how to set their company up for continued success while preserving the legacy and reputation they’ve spent years building.
In reality, most founders have never thought about their exit until the moment arrives. And by then, it’s too late to do it right.
That’s why I spent 9 months meticulously preparing my exit from Super.com, my $200M+ revenue/year company that continued growing 50%+ YoY after I left.
I’m including my resignation letter, the 9-step process I followed, and the hard-earned lessons that led to a successful transition.
Why This Trend Is Accelerating Now
I’m not alone in this transition. Many founders are making similar moves to frontier labs, and the momentum is only building.
Instead of building AI wrappers on top of external APIs, founders get to work on fundamental AI safety challenges and help shape the development of foundational models from the inside. The opportunity is about impact at scale and contributing to safe AGI that could benefit humanity for generations.
Plus, they work alongside world-class researchers on problems that matter deeply, with the resources and equity alignment to make long-term bets on the future.
But there’s another dimension to this.
Even from a lab’s perspective, these founders represent incredibly valuable employees. They understand the complete stack of bringing new innovative products to market, something pure researchers, despite their brilliance, often lack.
Having spent years navigating the messy reality of product-market fit, scaling teams from 0 to 100+ people, managing complex stakeholder dynamics, and shipping under intense pressure, these founders bring first-hand operational experience that’s impossible to teach in a classroom or research lab.
This creates a powerful win-win dynamic that’s rare in the talent market:
As we continue to move rapidly towards AGI, I expect this trend to accelerate. In fact, founders reach out to me constantly, expressing their (often secret) desire to join the labs. They are curious and excited, but they don’t know how to make the transition smoothly.
So if you are a founder thinking about joining a lab, it’s never too late. But first, you need to exit properly.
So here’s the 9-step process I developed over 9 months of careful preparation:
Step 1: Write Down Your Story Before You Tell Anyone
This is the step most founders skip, and it’s the biggest mistake you can make.
Before you tell anyone you are leaving, you need to sit down and document your complete story
What you need to write down:
Why did you start? What was the original problem that obsessed you? What kept you up at night? What made you believe this company needed to exist? Capture the emotional truth of those early days, because that’s what people will remember.
What did you accomplish? Document every major milestone: product launches, revenue milestones, team growth, market expansion, crisis moments you navigated, and pivots you executed. Be specific with numbers and dates.
Does your motivation still align? Be honest about whether your motivation still aligns with operating day-to-day, or whether it’s time to step back and trust the team you’ve built. There’s no shame in admitting that the company may have evolved beyond a certain point of your passion or zone of genius.
What did the company become? Describe what the company became under your leadership, the culture, the values, and the strategic position. This is your legacy statement.
You’ll forget faster than you think as details fade and timelines blur. Other people’s memories are even fuzzier, and they’ll fill in gaps with their own interpretations.
I spent three full weeks writing my story. I went through old emails, board decks, and Slack messages. I reconstructed timelines and rediscovered decisions I’d completely forgotten about. That document became my north star for every conversation that followed.
This is how you own the narrative. Write it down before anyone else writes it for you.
Step 2: Talk to Your Co-Founder Privately First
That Christmas call with Hussein was one of the hardest conversations I’ve ever had.
We’d built Super.com together from nothing. We’d survived, celebrated massive wins, and spent more time together than with our own families for years. And now I was about to tell him I was leaving.
The key to this conversation is to make it honest and heart-to-heart. Share openly and don’t hold back your emotions or try to be professional about it.
What you need to align on in this conversation:
The successor. Who’s the right person to take over your role? Is it your co-founder? Someone on the team? An external hire? Get aligned on this before you talk to anyone else, because if you are not aligned, the board conversations will become messy.
The narrative. What story are you going to tell about why you are leaving? It needs to be authentic, consistent, and something you both believe in. If the co-founder senses you are being dishonest or political about your reasons, they’ll struggle to support you through the process.
The timeline. When are you announcing? When are you leaving? What transition period makes sense? Your co-founder needs time to mentally prepare for what comes next.
Align on everything before anyone else knows. The moment the word leaks before you are aligned, you lose control of the process.
Give this conversation the time and respect it deserves. Block out several hours so you don’t rush it. Your co-founder deserves that.
Step 3: Talk to Board Members 1:1 and Not in a Group
This is where you protect the company’s value, and it requires care.
Never announce your resignation in a board meeting without first informing every board member individually.
In a group setting, board members perform for each other. They stake out positions. They are mindful of how they’ll look to their peers. What should be a thoughtful discussion about succession becomes a bureaucratic negotiation.
Whereas individual conversations are different. They are honest and collaborative. They let you address each board member’s specific concerns and get genuine buy-in.
Your strategy for each 1:1:
Name the successor upfront. Start the conversation by saying exactly who you believe should take over and why. This frames the entire discussion and prevents the board member from mentally auditioning alternatives while you are talking.
Make the case for promoting from within. If you are promoting someone internal (which you should strongly consider), explain why this person is the right choice. Talk about their growth trajectory, their deep understanding of the business, their relationship with the team, and their readiness for the role.
Our VP of Engineering had been our first engineering manager and had grown with us for over 7 years. He knew our codebase better than anyone, had scaled the team from 10 to 100+ technical staff, and had earned deep trust across the organization. The choice was obvious, but I still needed to articulate why to each board member.
Address concerns before they are raised. Think through every objection a board member might have and proactively address it.
Get explicit buy-in. Don’t leave the conversation without hearing them explicitly say they support your plan.
I spent a month having these conversations. By the time we held the official board meeting, every single board member already knew the plan and had given their support.
Step 4: Hold the Official Board Meeting
This should happen only after your successor is finalized and every board member has been individually informed.
By this point, the official board meeting is only about documentation and making it formal.
What needs to be crystal clear in this meeting:
Clear timeline. When are you announcing internally? When are you announcing externally? What’s your last day? What does the transition period look like? Map out every key date so everyone knows exactly what’s happening when.
Defined next steps. Who’s drafting the internal announcement? Who’s handling investor communications? Who’s managing PR if needed? What legal documents need to be updated? What’s the succession plan for your responsibilities?
Successor confirmation. Formally confirm the successor and outline their transition plan. How will they grow into the role? What support will they get? What authority do they have during the transition?
No surprises. Nothing discussed in this meeting should be a surprise to anyone.
The goal is to make this meeting feel inevitable and well-managed. You want board members leaving the meeting thinking, “Wow, they really thought through every detail.”
Step 5: Email Investors with Your Narrative and Legacy Attached
Share the full story and don’t make it sound like a plain resignation notice.
Most founders send a generic email: “I’m stepping down as CTO, effective [date]. I’m grateful for the journey and confident in the team.” That’s a missed opportunity and frankly, a mistake.
Your investors have backed you personally as much as they’ve backed the company. They deserve to hear your full story (why you started, what you built, why you are leaving, and what you are proud of). This is your chance to remind them of the journey you’ve been on together and to cement your legacy in their minds.
What your email should include:
The full narrative. Share the story you documented in Step 1. Make it personal and emotional. Remind them why you started this company and what you’ve built together.
Specific accomplishments. Don’t be modest. List the concrete achievements: revenue growth, customer acquisition, product launches, team building, and market position. Let the numbers speak to the value you created.
The succession plan. Explain who’s taking over and why they are the perfect person for the job. Give investors confidence that you are leaving the company in excellent hands.
Your vision for the future. Share what you believe is possible for the company going forward. Paint the picture of what the next chapter looks like and why you are excited about it, even though you won’t be leading it.
Gratitude. Thank them specifically for their support. Call out specific moments when their advice or backing made a difference.
This matters because investors talk constantly. They sit on multiple boards, invest in each other’s funds, share deal flow, and compare notes on founders they’ve backed. You want them aligned on your story for future references and backchannels.
I spent as much time on my investor email as I did on some board presentations. It was pages long and included my complete narrative.
The responses I got back were incredible: investors thanking me for the transparency, offering to help with my next chapter, and expressing excitement about staying connected.
Step 6: Talk to C-Suite and Key Employees 1:1
The key employees, executives, and the C-Suite must hear from you directly.
Nothing destroys trust faster than hearing major news in a group setting where you can’t ask questions or process emotions. Your key people have earned the right to a private conversation.
Who counts as key in this context:
C-suite executives. Every single person on your executive team needs a 1:1. These are the people you’ve worked most closely with, and they need time to process how your departure affects their role and the company.
Long-tenured team members. Anyone who’s been with you from the early days deserves a direct conversation. They’ve earned that respect through their loyalty and contributions.
Key individual contributors. Think about the people who, if they left, would have a significant impact on the business. It could be your best engineers, your top salespeople, and your critical operations folks.
These conversations should happen as close together as possible (ideally within a 24-48 hour window) to prevent information leaks and chaos.
I scheduled 30-minute 1:1s with 15+ people over a two-day period. It was exhausting, but also among the most meaningful conversations I had during the transition.
People appreciated the transparency and the personal touch, and it paid off when we made the broader announcement.
Step 7: Make the Company-Wide Announcement
Then hold office hours and show up for the questions.
I still remember walking into that all-hands as the room went quiet. You could feel the tension and curiosity in the air. This is one of those moments that defines your leadership legacy.
How to handle the company-wide announcement:
Choose the right format. An all-hands meeting is standard, but consider the size of your company. If you are huge, you might need to do multiple sessions across time zones or locations. If you are small enough, do it in person if possible. The personal touch matters.
Share the emotions. Don’t try to be robotic or overly professional. It’s okay to be emotional. Your team has shared this journey with you, and they deserve to see that this decision isn’t easy for you either.
Introduce the successor. Bring your successor on stage or into the conversation. Let them share their vision and their commitment. Give the team a chance to start building confidence in the new leadership.
Paint the future. Explain what this means for the company going forward. What’s not changing? What new opportunities does this create? Help people see this as a next chapter.
Open the floor. Take questions. Be honest and don’t dodge the hard ones. If you don’t know something, admit it. If you can’t share something, explain why.
Hold office hours. After the formal all-hands, make yourself available for more intimate conversations. Set up a sign-up sheet or just hang around. People will have questions they didn’t want to ask in front of everyone.
The goal is to make people feel informed, respected, and optimistic about the future.
I held office hours for three days after the announcement. People came by in pairs and small groups, asking questions, sharing memories, and processing the change. It was time-consuming, but it made all the difference in how the team responded.
Step 8: Use the Window Before Your Last Day
You can’t get fired at this point, as you are already leaving. This is the only time in your career when you have full founder authority with zero consequences.
This is the most overlooked part of the resignation process, and it’s potentially the most valuable. It creates a remarkable opportunity window to push bold moves and set up wins for your successor.
What you should consider:
Push through bold initiatives. Launch an experimental project. Try an unconventional marketing approach. Make the aggressive competitive move. If it works, your successor inherits a win. If it fails, you take the heat, and it’s forgotten. Just make sure what you do is within acceptable limits.
Set up easy wins. What can you tee up that your successor can execute in their first 90 days? It could be big customer deals that are close to closing, product launches that are ready to ship, or partnerships that just need final signatures.
Document everything. Create transition documents, relationship maps, strategic memos, and decision frameworks that will help your successor understand the landscape. This is knowledge transfer at its finest.
Optional consideration. Several advisors recommended negotiating my own severance with the board at this stage. It felt weird negotiating with yourself when you are still technically in charge, but apparently, it’s not uncommon.
I decided not to pursue it because I felt financially comfortable and wanted to keep things simple. But if you’ve sacrificed financially to build the company and want to secure your exit, this is the moment to have that conversation. The board will likely be more generous while you are still protecting company value.
Step 9: Make the Public Post Count
List your accomplishments, and end with a strong CTA for whatever’s next.
Your public resignation post is a strategic asset, yet most founders treat it as a formality.
My LinkedIn post announcing my exit became one of my highest-performing posts ever (100K+ impressions). It got hundreds of comments and dozens of DMs about opportunities. It opened countless doors and created opportunities I never would have discovered otherwise.
How to craft a public post that works for you:
Own the reason authentically. Don’t be vague or corporate. Tell people exactly why you are leaving in a way that’s honest and compelling. If you are joining a frontier AI lab to work on AGI, say that with conviction. If you are burned out and need a break, you can say that too.
Tell the story with numbers. List your specific accomplishments with metrics. Mine looked something like:
$200M+ in revenue, 50%+ YoY growth, scaled team from 0 to 150+, and served 50M+ users.
Numbers make your achievements tangible and memorable.
Celebrate the team. Give credit to your co-founders, executives, and team members by name where appropriate. Those people will share your post, amplifying your reach, and it positions you as a leader who builds great teams.
End with a clear CTA. End with a specific call-to-action for whatever’s next. Give people a reason to contact you.
Make it human. Share a personal moment, an emotion, a vulnerable thought. The posts that perform best are the ones that feel authentic.
You only get to resign once, so make it count.
Finally, None of This Works Without the Team You Leave Behind
Hussein and the Super.com team are the reason the company is thriving after my exit.
This is the most important lesson of all: Your resignation process is only successful if the company succeeds after you leave. And the company only succeeds if you’ve built a team strong enough to thrive without you.
The best founders make themselves irrelevant. They build systems that don’t depend on their daily involvement. They develop leaders who can make decisions without checking in. They create cultures that persist regardless of who’s in charge.
Stepping back should only happen when the team is strong enough to accelerate without you. That’s the sign you’ve truly succeeded as a founder when your absence makes no difference to the company’s trajectory.
I’m grateful to the team for making the decision to step back the right call.
They proved that what we built together was bigger than any individual, including me. That’s the ultimate validation for any founder.
If You are Considering a Transition…
If you are a late-stage or unicorn founder considering a transition or thinking about joining an AI lab, I’d encourage you to start planning now, instead of the last moment when you are ready to leave.
The founders who exit successfully spend months preparing. They document everything, have difficult conversations early, build consensus carefully, and think through every detail of what happens after they are gone.
Many founders want to join labs but don’t know how to navigate the transition. They are worried about letting their team down, burning bridges with investors, and tarnishing their reputation.
Those are valid concerns. But they are also manageable if you follow a thoughtful process.
Feel free to reach out if you are navigating this transition. It’s never too late to make the move, but it’s also never too early to start planning properly.


https://keithnewman.substack.com/
This is exactly what I needed right now and there’s almost nothing out there for founders going through it.
thank you for sharing, Henry!