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S3
S3 invests the Franke family's capital directly in late-stage enterprise tech, with confirmed positions in Tanium and Arctic Wolf, from a single Austin...
S3
S3 was founded in 2008 in Austin, Texas by Bob Deaton and Charlie Spink as the dedicated investment vehicle for the Franke family, whose wealth originates from the founding and operation of the Franke Coffee Systems business. The firm operates as a lean, principals-led shop that invests family capital directly into growth-stage and late-stage venture-backed technology companies, eschewing the fund-of-funds model common among family offices of similar scale. S3 does not raise outside capital and does not operate as a multi-family office. The firm targets equity investments in private technology companies across enterprise software, fintech, digital health, and applied AI, typically participating in Series B through pre-IPO rounds. S3 writes checks in the $5 million to $25 million range and frequently co-invests alongside established coastal venture funds. Confirmed portfolio positions include Tanium, the endpoint security platform, and Arctic Wolf Networks, the managed cybersecurity provider — both of which S3 supported through multiple financing rounds before their late-stage valuations expanded significantly (per public record). The firm concentrates on North American companies but has periodically evaluated opportunities in European enterprise software markets. S3 operates with a deliberately small team structure, with Deaton and Spink serving as the primary investment decision-makers. The firm maintains a single office in Austin and has not publicly disclosed total assets under management. May 2024: S3 participated in a secondary share purchase of Tanium alongside existing institutional investors, signaling continued conviction in the company's path to public markets (per public record). The firm's model prioritizes concentrated position sizes and board-level engagement over broad portfolio diversification. The structural differentiator is S3's pure direct-equity mandate, which bypasses fund commitments entirely — a posture that eliminates the blended fee drag of manager selection and gives the Franke family full transparency into every underlying asset. This architecture is atypical for a single-family office of its size, most of which allocate heavily to third-party venture funds before making direct investments. S3 instead operates more like a permanent-capital crossover fund, holding positions from growth stage through potential IPO without fixed fund-life pressure.
General information
Firm type
Asset Manager
Year founded
2008
AUM
$500 million - $1 billion (Altss estimate)
Location
Region
North America
Country
United States
City
Austin
Corporate office
Austin, TX, United States
Principals
Bob Deaton
Founder and Managing Partner
Charlie Spink
Co-Founder and Managing Partner
Sector focus
Frequently asked questions
Who runs investment decisions at S3?
Bob Deaton and Charlie Spink, the firm's co-founders, control all investment decisions. Deaton serves as Managing Partner and leads deal sourcing and structuring, while Spink focuses on portfolio company engagement and exit strategy. There is no external investment committee; the Franke family principals are closely involved in allocations but delegate day-to-day deal execution to Deaton and Spink.
How does S3 source proprietary deal flow?
S3 sources deals through a deep network of venture capital relationships built over 15 years of co-investing alongside firms like Andreessen Horowitz, Sequoia, and Lightspeed. The firm's Austin location gives it access to both coastal syndicates and the growing central-US technology ecosystem. S3 does not operate a publicly visible origination platform and relies on founder referrals and board-level introductions for the majority of its investments.
Is S3 structured as a single family office or does it operate more like a venture firm?
S3 functions as a single-family office in structure — it manages the capital of one family and does not solicit outside investors — but operates with the investment posture of a direct-investment venture firm. The firm writes concentrated equity checks, takes board seats where possible, and holds positions with permanent-capital flexibility. Unlike most single-family offices, S3 makes no fund commitments to external managers.
Does S3 participate in fund commitments or only direct deals?
S3 invests exclusively through direct equity transactions and does not allocate capital to venture capital or private equity funds as a limited partner. This fund-avoidance posture is a deliberate structural choice designed to eliminate management fees and carried interest leakage, giving the Franke family full economic exposure to each underlying portfolio company.
What investment stages does S3 typically target?
The firm targets growth-stage and late-stage venture rounds, typically Series B through pre-IPO, writing checks between $5 million and $25 million. S3 occasionally participates in secondary transactions to increase its ownership in existing portfolio companies, as it did with Tanium in 2024. The firm avoids seed and early-stage venture, preferring companies with proven revenue traction and clear paths to liquidity.
Where does the underlying wealth come from?
The capital S3 manages originates from the Franke family, whose wealth was generated through Franke Coffee Systems — a global manufacturer of premium coffee machines and related food-service equipment. The family's liquidity event provided the permanent capital base that S3 has deployed into technology investments since 2008.
Does S3 maintain philanthropic structures, and how are they separated from the investment entity?
Public records do not indicate a separate philanthropic foundation structured under the S3 umbrella. The Franke family's charitable giving, if any, appears to be conducted through personal or separate family entities. S3 is described in all available sources exclusively as an investment platform, with no commingled philanthropic or program-related investment activity.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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