Blok was founded by Sahana Rajasekar in 2019.

Who are Blok's investors?

Blok's investors include Y Combinator, Blank Ventures, Lifeline Ventures, MaC Venture Capital, Protagonist, Rackhouse Venture Management Lp.

Where is Blok headquartered?

Blok is headquartered in San Francisco, US.

Blok

DefunctYC W20

San Francisco, US · Founded 2019 · 2 employees · 6 known investors

Find your way into Blok

457 people in our graph share verified history with the Blok team — schools, employers, funds. One of them is your warm intro.

Sangeen Zebunlockedknows Sahana Rajasekar · together at Sierra (overlapped)

×2knows the team · via Google

knows the team · via Zip

knows the team · via UC Berkeley

×2knows the team · via Sierra

×4knows the team · via Pinterest

Blok provides a platform where fitness instructors can offer live classes, sell recorded content, monetize specialized services, manage brand partnerships, and build their own branded communities.

Also known as Blok (name is work-in-progress) · Blok Fitness

Consumer Sports Tech Fitness Health & WellnessUnited States of AmericaAmerica / CanadaFully Remote

Founders & leadership· Y Combinator alumni (W20)

Blok was founded in 2019 by Sahana Rajasekar.

Sahana Rajasekar in 𝕏Founder & CEO2019–2020Sahana Rajasekar is a product engineer and designer with previous experience at Pinterest, Chorus, and Even. She also has background in fitness instruction.

Investors · 6

Y CombinatorSan Francisco · $500K

Blank VenturesreportedSan Francisco · $500K – $2M

Lifeline VenturesreportedHelsinki

MaC Venture CapitalreportedLos Angeles · $500K – $2M

ProtagonistreportedBay Harbor Islands · $10K – $1M

Rackhouse Venture Management LpreportedSan Francisco · $250K

In the news

Blok Raises $7.5M To Let AI Simulate Users Before Your Product Even Launches - EGamers.io - P2E NFT Games Portalegamers.io · Jul 2025

Blok Raises $5M in Seed Fundingfinsmes.com · Jul 2025

Blok Secures $7.5 Million Seed Round Led By MaC Venture Capital | TradedVCtraded.co · Jul 2025

Blok raises $7.5M to build AI agents that simulate human behavior to accelerate software testing - SiliconANGLEsiliconangle.com · Jul 2025

Blok London raised £891.8K in funding via Crowdcube. | Nordic 9nordic9.com

Frequently asked questions

What does Blok do?: Blok provides a platform where fitness instructors can offer live classes, sell recorded content, monetize specialized services, manage brand partnerships, and build their own branded communities.
Who founded Blok?: Blok was founded by Sahana Rajasekar in 2019.
Who are Blok's investors?: Blok's investors include Y Combinator, Blank Ventures, Lifeline Ventures, MaC Venture Capital, Protagonist, Rackhouse Venture Management Lp.
Where is Blok headquartered?: Blok is headquartered in San Francisco, US.