Justin Kaufenberg

About Justin Kaufenberg

Justin Kaufenberg is a co-founder of Slingshot Insurance and a member of its board. Slingshot is an insurance company built for embedded insurance, such as cover for amateur sports, travel and gig work. Its system automates workflows with AI and links to partners through APIs. Kaufenberg is also managing director at Rally Ventures.

Rally co-founded Slingshot with chief executive Ethan Genteman. Rally and Skyward Group co-led Slingshot's $27 million seed round, announced October 22, 2026. In that announcement, Kaufenberg said the real growth in insurance now lies in small policies sold at checkout. He said Slingshot was built to give managing general agents the infrastructure to launch new products faster than before.

Experience

This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Justin Kaufenberg in the role, so the role may have started earlier or lasted longer.

Slingshot Insurance, Inc. Current

Co-founder, Board Member

2026 – Present · Minneapolis, MN

Slingshot gives MGAs, software platforms and distributors the technology and capacity to launch and run insurance sold at checkout.

RV

Rally Ventures Current

Managing Director

Yardstik, Inc.

Chairman of the Board

2020 – 2026 · Minneapolis, MN

Workforce screening and monitoring software for employers and hiring platforms.

Negotiatus Corp.

Director

2020 – 2026 · New York, NY

Purchasing and payment software for businesses.

Ankored, Inc.

Director

2026 · Boston, MA

Software for youth sports organizations to manage background checks and safety requirements.

BA

BlankMetal.ai, Inc.

Director

2025 · Minneapolis, MN

Vertical Insure, Inc.

Director and promoter

2023 – 2025 · Minneapolis, MN

Provides insurance that software platforms can offer customers during transactions.

BS

Bond Sports, Inc.

Director

2023 – 2024 · Boca Raton, FL

Key Colleagues at Startups

The people Justin Kaufenberg works with at each company, as listed on that company's latest Form D.

Slingshot Insurance, Inc. · Form D, Oct 23, 2026

Ethan Genteman

Founder, CEO and director

Nicholas Malz

CFO

Brock Noland

Co-founder, Board Member

JH

Jeffrey Hinck

Co-founder, Board Member

BlankMetal.ai, Inc. · Form D, Oct 2, 2025

ER

Elli Rader

Executive officer

Brock Noland

Director

EJ

Eric Johnson

Executive officer

MH

Mark Hines

Executive officer

JH

Jeffrey Hinck

Director

MJ

Matthew Johnson

Chief Executive Officer and director

Vertical Insure, Inc. · Form D, Jun 12, 2025

Brock Noland

Founder & CEO, director

RE

Rick Ehrman

EVP of Corporate and Business Development, director

GB

Greg Beaufait

Director and promoter

CW

Charles Wyatt

Executive officer

JH

Jeffrey Hinck

Director and promoter

Justin Kaufenberg in the News

• Oct 22, 2026·Pulse 2.0Slingshot Insurance Emerges From Stealth With $27 Million Seed Funding Co-Led By Rally Ventures And Skyward Group
• Dec 9, 2020·Minneapolis / St. Paul Business JournalRally Ventures closes on $250M fourth fund

Sources

1. SECSlingshot Insurance, Inc. Form D, filed Oct 23, 2026
2. SECYardstik, Inc. Form D, filed Sep 15, 2026
3. SECNegotiatus Corp. Form D, filed Mar 16, 2026
4. SECAnkored, Inc. Form D, filed Mar 12, 2026
5. SECBlankMetal.ai, Inc. Form D, filed Oct 2, 2025
6. SECVertical Insure, Inc. Form D, filed Jun 12, 2025
7. SECBond Sports, Inc. Form D, filed Sep 6, 2024
8. releaseSlingshot press release, October 22, 2026