Kirk Posmantur
Co-Founder and CMO @ 25madison
New York, United States
Kirk Posmantur is a seed investor at 25madison in New York focused on Mobile and Sports. Kirk Posmantur is the Chairman & Founder of Axcess Worldwide, a partnership development company that creates inspired ideas and connects extraordinary brands and people. With over 20 years of experience generating hundreds of millions of dollars in contracted revenue for many of the world’s top brands in the luxury and lifestyle, consumermass, and hospitality and travel sectors, Kirk is widely recognized as the pioneer and innovator of partnership development. Axcess currently represents over 50 of the world’s leading brands.Kirk is greatly involved in multiple charities and has served as the Chairman of the Board for the Atlanta chapter of After School All-Stars since 2000, raising over $20 million for his charity’s chapter.Kirk earned his undergraduate degree at the William F. Harrah College of Hotel Management at the University of Nevada, Las Vegas.
- Total investments:
- 7
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Kirk Posmantur invests in
Stages Kirk Posmantur invests in
Countries Kirk Posmantur invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
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Investment Focus
Industry
- Mobile 1 (14%)
- Sports 1 (14%)
- Distillery 1 (14%)
- Wine And Spirits 1 (14%)
- Information Technology 1 (14%)
Stage
- Seed 2 (29%)
- Series A 1 (14%)
- Series B 1 (14%)
- Funding Round 1 (14%)
Country
- United States 2 (29%)
- Portugal 1 (14%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| TMRW is a sports company that focuses on progressive approaches to sports, media, and technology. Using advances in technology, the company launches golf leagues and holds a series of stadium events to provide people with growing approaches to sports and entertainment. | $14.7M / Oct 18, 2022 | ||
| Onda is a spirits brand for a new generation of drinkers. Onda’s first product is a line of canned sparkling tequila beverages, made with blanco tequila and real, legit fruit. Onda’s beverages are all 5% ABV, 100 calories, zero sugar, zero carbs and naturally gluten free. Onda’s brand is inspired by the surf style of the ‘90s. | $12.5M / Series B / Jun 28, 2022 | ||
| Onda is a spirits brand for a new generation of drinkers. Onda’s first product is a line of canned sparkling tequila beverages, made with blanco tequila and real, legit fruit. Onda’s beverages are all 5% ABV, 100 calories, zero sugar, zero carbs and naturally gluten free. Onda’s brand is inspired by the surf style of the ‘90s. | $5M / Series A / May 10, 2021 | ||
| Onda is a spirits brand for a new generation of drinkers. Onda’s first product is a line of canned sparkling tequila beverages, made with blanco tequila and real, legit fruit. Onda’s beverages are all 5% ABV, 100 calories, zero sugar, zero carbs and naturally gluten free. Onda’s brand is inspired by the surf style of the ‘90s. | Series A / Jan 04, 2021 | ||
| Onda is a spirits brand for a new generation of drinkers. Onda’s first product is a line of canned sparkling tequila beverages, made with blanco tequila and real, legit fruit. Onda’s beverages are all 5% ABV, 100 calories, zero sugar, zero carbs and naturally gluten free. Onda’s brand is inspired by the surf style of the ‘90s. | Seed / Nov 30, 2020 | ||
| Onda is a spirits brand for a new generation of drinkers. Onda’s first product is a line of canned sparkling tequila beverages, made with blanco tequila and real, legit fruit. Onda’s beverages are all 5% ABV, 100 calories, zero sugar, zero carbs and naturally gluten free. Onda’s brand is inspired by the surf style of the ‘90s. | $1.2M / Seed / Jul 01, 2020 | ||
| m›Path is a mobile development platform that helps individuals create and manage applications without writing a single line of code. It is founded by the former CTO & CIO of Salesforce, Claus Moldt and Trae Chancellor. | $3.7M / Seed / Jan 01, 2014 |
Co-Investors
About 25madison
25madison is an early-stage venture platform: working with entrepreneurs to build companies from the ground up and investing in pre-seed to series A startups. The platform is comprised of 4 segments: (i) General studio: Builds companies across verticals (ii) 25m health: Builds and invests in healthtech startups in partnership with LifePointHealth (iii) Ventures fund: Invests in pre-seed to series A startups focused on B2B SaaS, fintech, and healthtech (iv) 25m create: Brand and experience agency with services including brand strategy, visual identity, experience design, and web & digital marketing
25madison Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Gary Ginsberg
Co-Founder
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Grant Silow
Managing Director
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Justine Lee
Chief Operating Officer
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Kirk Posmantur
Co-Founder and CMO
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Lance West
Co-Founder
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FAQ
What does Kirk Posmantur invest in?
Kirk Posmantur invests primarily in Mobile, Sports and Distillery startups, most often at Seed and Series A stage. Most of the 7 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Kirk Posmantur?
Public channels for Kirk Posmantur include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Kirk Posmantur last invest?
The most recent investment recorded for Kirk Posmantur closed in Oct 2022. Shizune tracks 7 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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