Who is Steve Martocci?

Steve Martocci is a programmer, operator and musician. He co-founded GroupMe, Splice, Blade and SuppCo, was named to Fortune's 40 Under 40 (Technology) in 2020, and is now at Function Health while building the BandWith fan platform.

What companies did Steve Martocci found?

GroupMe (2010, acquired by Skype in 2011 for a reported ~$85M), Splice (2013, the "GitHub for musicians," ~$160M raised), Blade (2014, urban air mobility, public on NASDAQ as BLDE since 2021) and SuppCo (2023, supplement companion app, acquired by Function Health in May 2026).

How was GroupMe started?

Steve Martocci and Jared Hecht built GroupMe in about 18 hours at the TechCrunch Disrupt NYC hackathon in May 2010 as a group-texting prototype on the Twilio API. Skype acquired it about 15 months later.

Splice is a music-creation platform Steve co-founded with Matt Aimonetti in 2013. It raised ~$160M through a $55M Series D led by Goldman Sachs, reached 4M+ users, paid $40M+ to sound creators, and its samples appear in records by Eminem, Ariana Grande, Dua Lipa and Doja Cat. He was CEO until 2022, then Executive Chairman.

What has Steve Martocci invested in?

He is an angel investor. Investments that have exited include Flatiron Health (Series A, 2013; acquired by Roche for $1.9B in 2018), SmartThings (seed, 2012; acquired by Samsung in 2014), Codecademy (Series A, 2011; acquired by Skillsoft in 2022), HIFI (2022; acquired by Block in 2023), Sweetgreen (IPO on the NYSE in 2021) and Wise (Series A, 2013; listed on the London Stock Exchange in 2021).

What awards has Steve Martocci received?

Fortune 40 Under 40 (Technology, 2020), Rolling Stone Future 25 (2019), Billboard Dance Power Players (2019) and Inc. 30 Under 30 (2011, with GroupMe co-founder Jared Hecht).

Where did Steve Martocci go to college?

Carnegie Mellon University, graduating in 2004 with a B.S. in Information Systems.

How can I contact Steve Martocci?

Reach him on X at @smart (https://x.com/smart) or on LinkedIn (https://www.linkedin.com/in/stevemartocci).

—— Programmer. Operator. Musician.

Steve Martocci

“Music has always been my motivator, but code is my canvas.”

TechCrunch, 2018 ↗

Co-founder of GroupMe, Splice, Blade and SuppCo. Now at Function — and still building.

companies founded

GroupMe · Splice · Blade · SuppCo

$160M

raised for Splice

through Series D, led by Goldman Sachs

40U40

Fortune 40 Under 40

Technology, 2020

'04

Carnegie Mellon

B.S. Information Systems

—— Companies

GroupMe

Co-founder · 2010–2011

Splice

Co-founder & CEO, later Executive Chairman · 2013–2022

Blade

Co-founder · 2014–

SuppCo

Co-founder & CEO · 2023–2026

—— Now

Function

SuppCo was acquired by Function Health in May 2026 — closing the loop from labs to supplement stacks to outcomes.

BandWith

A fan platform for the jamband community — built live, in public, with AI coding agents doing the heavy lifting.

“We try to make more seats at the table in the music business.”
TechCrunch, 2018

“Don't listen to me talk — go and build something. Focus on what you're good at, solve a real world problem, use the tools that you have to make it happen.”
TCTV, Disrupt Hackathon 2011

“Easy enough for grandma to use, but powerful enough for the most hardcore user in the space to go deep on. I did that with Splice.”
The Dr. Hyman Show, 2025

—— Latest talks

Supplements: What's Working, What's a Scam, and What's Dangerous
The Dr. Hyman Show · 2025

Eric Hinman × SuppCo — Fireside Chat
SXSW · 2026

Next Unicorns: Building the GitHub for Music
This Week in Startups · 2021

All talks & press ↗

—— FAQ

Who is Steve Martocci?: Steve Martocci is a programmer, operator and musician. He co-founded GroupMe, Splice, Blade and SuppCo, was named to Fortune's 40 Under 40 (Technology) in 2020, and is now at Function Health while building the BandWith fan platform.
What companies did Steve Martocci found?: GroupMe (2010, acquired by Skype in 2011 for a reported ~$85M), Splice (2013, the "GitHub for musicians," ~$160M raised), Blade (2014, urban air mobility, public on NASDAQ as BLDE since 2021) and SuppCo (2023, supplement companion app, acquired by Function Health in May 2026).
What is Steve Martocci doing now?: He is at Function Health following its acquisition of SuppCo in May 2026, and is building BandWith — a fan platform for the jamband community across web, iOS, Android, Apple TV, Roku and CarPlay — shipping it daily with AI coding agents.
How was GroupMe started?: Steve Martocci and Jared Hecht built GroupMe in about 18 hours at the TechCrunch Disrupt NYC hackathon in May 2010 as a group-texting prototype on the Twilio API. Skype acquired it about 15 months later.
What is Splice?: Splice is a music-creation platform Steve co-founded with Matt Aimonetti in 2013. It raised ~$160M through a $55M Series D led by Goldman Sachs, reached 4M+ users, paid $40M+ to sound creators, and its samples appear in records by Eminem, Ariana Grande, Dua Lipa and Doja Cat. He was CEO until 2022, then Executive Chairman.
What has Steve Martocci invested in?: He is an angel investor. Investments that have exited include Flatiron Health (Series A, 2013; acquired by Roche for $1.9B in 2018), SmartThings (seed, 2012; acquired by Samsung in 2014), Codecademy (Series A, 2011; acquired by Skillsoft in 2022), HIFI (2022; acquired by Block in 2023), Sweetgreen (IPO on the NYSE in 2021) and Wise (Series A, 2013; listed on the London Stock Exchange in 2021).
What awards has Steve Martocci received?: Fortune 40 Under 40 (Technology, 2020), Rolling Stone Future 25 (2019), Billboard Dance Power Players (2019) and Inc. 30 Under 30 (2011, with GroupMe co-founder Jared Hecht).
Where did Steve Martocci go to college?: Carnegie Mellon University, graduating in 2004 with a B.S. in Information Systems.
How can I contact Steve Martocci?: Reach him on X at @smart (https://x.com/smart) or on LinkedIn (https://www.linkedin.com/in/stevemartocci).