[Skip to main content](https://www.t-mobile.com#content-main) [![T-Mobile for Ventures](https://www.t-mobile.com/content/dam/t-mobile/ntm/branding/logos/corporate/TMO-Logos-2021-149X30-TFV-K.svg)](https://www.t-mobile.com/business/ventures) [![T-Mobile for Ventures](https://www.t-mobile.com/content/dam/t-mobile/ntm/branding/logos/corporate/TMO-Logos-2021-149X30-TFV-K.svg)](https://www.t-mobile.com/business/ventures) Contact us [](https://www.t-mobile.com) # Meet our investor team. We offer deep expertise in finance, operations, and strategy—and decades of combined, real-world experience—to help build and scale industry-leading companies. ## Meet our investor team. Open Navigation - [Home](https://www.t-mobile.com/business/ventures) - [About](https://www.t-mobile.com/business/ventures/about-us) - [Portfolio](https://www.t-mobile.com/business/ventures/investment-portfolio) # Our team. T-Mobile Ventures can connect you with T-Mobile leadership and specialized teams across our Product, Network, Advanced and Emerging Technology, and T-Mobile for Business organizations. # Charles Ruppert. Venture Investments and Corporate Development [Learn more on LinkedIn , opens in a new window](https://www.linkedin.com/in/cjruppert?icid=TFB_TMO_P_TMOVENTURE_AA67DFFBE350085C38974) ![Charles Ruppert.](https://t-mobile.scene7.com/is/image/Tmusprod/TFB-TMV_T-Mobile_Ventures_Page_Update-Promo_Card-Charles_Ruppert-16_9:HERO-mobile?fmt=jpg&fmt=jpg&qlt=85%2C0&resMode=sharp2&op_usm=1.75%2C0.3%2C2%2C0) ## Charles Ruppert. #### Samuel Chun. Venture Investments and Operations [Learn more on LinkedIn , opens in a new window](https://www.linkedin.com/in/samuel-chun-481801a?icid=TFB_TMO_P_TMOVENTURE_AA67DFFBE350085C38975) ![Samuel Chun.](https://t-mobile.scene7.com/is/image/Tmusprod/TFB-TMV_T-Mobile_Ventures_Page_Update-Promo_Card-Samuel_Chun-16_9:HERO-mobile?fmt=jpg&fmt=jpg&qlt=85%2C0&resMode=sharp2&op_usm=1.75%2C0.3%2C2%2C0) ## Samuel Chun. #### Oz Karatay. Corporate Development [Learn more on LinkedIn , opens in a new window](https://www.linkedin.com/in/oz-karatay/?icid=TFB_TMO_P_TMOVENTURE_AA67DFFBE350085C38976) ![Oz Karatay Headshot](https://t-mobile.scene7.com/is/image/Tmusprod/Oz_Karatay_Headshot:HERO-mobile?fmt=jpg&fmt=jpg&qlt=85%2C0&resMode=sharp2&op_usm=1.75%2C0.3%2C2%2C0) ## Oz Karatay. # Lucas Rooney. Corporate Development [Learn more on LinkedIn , opens in a new window](https://www.linkedin.com/in/lucasrooney/?icid=TFB_TMO_P_TMOVENTURE_AA67DFFBE350085C38973) ![Lucas Rooney](https://t-mobile.scene7.com/is/image/Tmusprod/Rooney,_Lucas_Headshot:HERO-mobile?fmt=jpg&fmt=jpg&qlt=85%2C0&resMode=sharp2&op_usm=1.75%2C0.3%2C2%2C0) ## Lucas Rooney. #### Nathaniel Mahlum. Corporate Development [Learn more on LinkedIn , opens in a new window](https://www.linkedin.com/in/nmahlum?icid=TFB_TMO_P_TMOVENTURE_AA67DFFBE350085C38976) ![Nathaniel Mahlum.](https://t-mobile.scene7.com/is/image/Tmusprod/TFB-TMV_T-Mobile_Ventures_Page_Update-Promo_Card-Nathaniel_Mahlum-16_9:HERO-mobile?fmt=jpg&fmt=jpg&qlt=85%2C0&resMode=sharp2&op_usm=1.75%2C0.3%2C2%2C0) ## Nathaniel Mahlum. # Touchdown Ventures. Corporate VC partner [Explore Touchdown Ventures , opens in a new window](https://www.touchdownvc.com?icid=TFB_TMO_P_TMOVENTURE_AA67DFFBE350085C38977) ![Touchdown Ventures.](https://t-mobile.scene7.com/is/image/Tmusprod/TFB-TMV_T-Mobile_Ventures_Page_Update-Promo_Card-Touchdown_Ventures-16_9:4x3?fmt=jpg&fmt=jpg&qlt=85%2C0&resMode=sharp2&op_usm=1.75%2C0.3%2C2%2C0) ## Touchdown Ventures. ### Interested in connecting your business with T-Mobile Ventures? Contact us ## T-Mobile Ventures - [English](https://www.t-mobile.com) - [Español](https://www.t-mobile.com) [![T-Mobile](https://www.t-mobile.com/content/dam/t-mobile/ntm/branding/logos/corporate/tmo-logo-white-v4.svg)](https://www.t-mobile.com/) - [About](https://www.t-mobile.com/about-us) - [Investor relations](https://investor.t-mobile.com/investors/default.aspx?INTNAV=fNav%3AInvestorRelations) - [Press](https://www.t-mobile.com/news) - [Careers](https://www.t-mobile.com/careers) - [Deutsche Telekom](https://www.telekom.com/en?INTNAV=fNav%3ADeutscheTelekom) - [Puerto Rico](https://www.t-mobilepr.com/?INTNAV=fNav%3APuertoRico) - [Privacy notice](https://www.t-mobile.com/privacy-center/our-practices/privacy-policy) - [Trust Center](https://security.t-mobile.com/?INTNAV=fNav%3ATrustCenter) - [Privacy Center](https://www.t-mobile.com/privacy-center) - [Consumer information](https://www.t-mobile.com/responsibility/consumer-info) - [Public safety/911](https://www.t-mobile.com/responsibility/consumer-info/safety/9-1-1) - [Terms & conditions](https://www.t-mobile.com/responsibility/legal/terms-and-conditions) - [Terms of use](https://www.t-mobile.com/responsibility/consumer-info/policies/terms-of-use) - [Accessibility](https://www.t-mobile.com/responsibility/consumer-info/accessibility-policy) - [Open Internet](https://www.t-mobile.com/responsibility/consumer-info/policies/internet-service) - [Do Not Sell or Share My Personal Information](https://www.t-mobile.com) - [Licenses & Patents](https://www.t-mobile.com/responsibility/legal/licenses-and-patents) - [Instagram](https://www.instagram.com/tmobile/) - [Facebook](https://www.facebook.com/Tmobileforbusiness/) - [X](https://twitter.com/TMobileBusiness/) - [YouTube](https://www.youtube.com/@t-mobileforbusiness) © 2026 T‑Mobile USA, Inc. ## Meet our investor team. ## Charles Ruppert. ## Samuel Chun. ## Oz Karatay. ## Lucas Rooney. ## Nathaniel Mahlum. ## Touchdown Ventures.