Twistlock founders shut down Minimus, return remaining $10M after $51M seed round
What's the deal? Cybersecurity startup Minimus is shutting down and returning its remaining cash to investors, less than three years after raising a $51 million seed round. Founders Ben Bernstein, Dima Stopel, and John Morello — who previously sold Twistlock to Palo Alto Networks for roughly $410 million in 2019 — decided to close the company after failing to build commercial momentum in a crowded market.
Why now? Eighteen months ago the founders renamed the company from GutsyDealroom has a profile for this one. Try Dealroom → to Minimus and shifted its product focus. When the market failed to respond, they spent recent weeks searching for a buyer for the company or its team. They found none, and chose to wind down in an orderly fashion rather than burn through remaining capital.
What was Minimus building? The company sold stripped-down container images and virtual machines designed to contain far fewer known vulnerabilities. Rather than scanning code after it was built, Minimus aimed to reduce vulnerabilities at the source. At its April 2025 launch, it claimed the approach could eliminate more than 95% of vulnerabilities from software supply chains.
Who backed it? The 2022 round — one of the largest seed financings in Israeli cybersecurity — was led by YL Ventures, with US firm Mayfield participating. Angels included Wiz co-founders Assaf Rappaport, Ami Luttwak, and Roy Reznik; former CyberArk chief executive officer Udi Mokady; and CrowdStrike chief executive officer George Kurtz.
The layoffs: Minimus had around 60 employees four months ago and 35 at closure. When it rebranded from Gutsy, it also cut more than 10 staff. The shutdown ends jobs for the remaining team.
What happens to customers? Unlike many abrupt shutdowns, Minimus is offering a 60-day transition. From August 24, it will maintain its product with bug fixes and support until it switches off its registry on October 22. Enterprise customers will be contacted individually, with refunds where applicable.
What did the founders say? "After a strategic process that did not work out, we decided to close Minimus in an orderly fashion," Bernstein said. "This is not the result we hoped for, but I am proud of the team and of what we built together."
The signal: Even seasoned founders with strong pedigrees and deep funding can struggle when customers already have plenty of competing security tools. Minimus faced a dominant rival in Chainguard, which has raised nearly $900 million and was valued at $5.4 billion last year, according to PitchBook. Returning $10 million rather than chasing a fire-sale exit is a rare, disciplined close.
Read more: calcalistech.com, en.globes.co.il
Image credit: dt10111
