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Sippl Macdonald Ventures
Roger Sippl, Informix founder, invests early-stage enterprise-software capital through Sippl Macdonald Ventures in Menlo Park.
Sippl Macdonald Ventures
Sippl Macdonald Ventures traces its roots to the wealth created by Roger Sippl, a foundational figure in the relational database industry. Sippl founded Informix in 1980, took it public, and built it into a multi-billion-dollar enterprise-software franchise before its acquisition by IBM in 2001. Together with Laura Macdonald, Sippl established the family office in Menlo Park — the geographic heart of Silicon Valley's venture ecosystem — to manage the proceeds and redeploy them into a new generation of enterprise technology companies. The office reflects the post-exit profile of a deeply technical operator rather than a diversified multi-asset allocator. Investment strategy concentrates on early-stage enterprise software, SaaS, and increasingly AI-native infrastructure. The firm writes direct seed and Series A checks, typically as a lead or co-lead, drawing on Sippl's own experience building a database giant to evaluate technical founders with asymmetric insight. Known portfolio exposures include ThoughtSpot, the search-driven analytics platform, and Fauna, the distributed document-relational database company, both reflecting a continued thesis around data infrastructure. No dedicated life-sciences, consumer, or hardware verticals are apparent in public deal records. The geographic footprint is overwhelmingly concentrated in the Bay Area, with occasional participations in broader US technology hubs. The team is lean by design — a hallmark of single-family offices built around an active founder-principal. Sippl operates from a historic firehouse on Oak Grove Avenue in Menlo Park that doubles as an office, signaling the non-institutional, conviction-driven style. While total AUM remains undisclosed, the deployment pace and check sizes observed in public filings suggest a substantial pool optimized for concentrated tech exposure rather than broad diversification. Adjacent vehicles or formal philanthropic structures are not publicly documented. Structurally, Sippl Macdonald Ventures is closer to an informal venture-angel platform than a multi-strategy family office. The investment function is inseparable from the founder's technical network and reputation. This creates a sourcing advantage in data-infrastructure deals — founders in that narrow corridor often seek Sippl's capital for the signal value of having the creator of Informix on their cap table. No outside CIO or professionalized investment committee is evident, making the portfolio a direct expression of a single technical founder's pattern-recognition across four decades of enterprise computing.
General information
Firm type
Single Family Office
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Menlo Park
Corporate office
Menlo Park, CA, United States
Principals
Roger Sippl
Co-Founder
Laura Macdonald
Co-Founder
Sector focus
Frequently asked questions
Who runs investment decisions at Sippl Macdonald Ventures?
Roger Sippl is the primary investment decision-maker. He co-founded Informix in 1980 and led it as CEO through its IPO and growth into a major relational-database company. Laura Macdonald is a co-founder of the family office and involved in its operations, though Sippl's technical-diligence capability and operator network drive deal selection. No external CIO or professionalized investment committee is publicly identified.
Is Sippl Macdonald Ventures a venture capital fund or a family office?
It is structured as a single-family office deploying personal capital from the Sippl-Macdonald family, not a fund with outside limited partners. The investment style resembles a venture practice — the firm leads or co-leads seed and Series A rounds in enterprise-technology companies — but all capital is proprietary. The office does not publicly market itself as a for-hire venture capital manager.
What investment stages does the firm typically target?
The firm concentrates on equity investments at the seed and Series A stages, where Sippl's operator experience can most directly influence company-building. Publicly documented participations show the firm entering at formation or early commercialization phases. Later-stage growth rounds or pre-IPO placements do not feature prominently in its known deal history, consistent with a founder-to-founder capital model.
Which sectors does Sippl Macdonald Ventures explicitly avoid?
Based on observable deal flow, the firm does not invest in consumer internet, hardware, life sciences, or real assets. The portfolio is tightly scoped to enterprise software, SaaS, and data-infrastructure companies — an extension of Sippl's career in database and middleware technologies. No clean-energy, fintech-lending, or media deals are evident in public records.
What is the relationship between Roger Sippl's Informix background and the firm's current thesis?
Sippl's Informix background provides both the capital and the investment lens. He built one of the first commercially successful relational-database systems, competing directly with Oracle in the 1980s and 1990s. That history informs a persistent thesis around next-generation data infrastructure — observable in portfolio holdings like Fauna (a distributed database) and ThoughtSpot (search-driven analytics). The firm seeks founders solving data-layer problems Sippl encountered firsthand.
Where does the underlying wealth come from?
The wealth originated from the 1980 founding and subsequent IPO of Informix Corporation, which became a publicly traded enterprise-software company and was later acquired by IBM in 2001. Sippl also founded multiple subsequent venture-backed companies, including Vantive, a CRM pioneer acquired by PeopleSoft (later Oracle). Secondary exits have compounded the primary Informix liquidity.
Does Sippl Macdonald Ventures maintain a philanthropic structure?
No separate philanthropic foundation or donor-advised fund is publicly associated with the office. The firm's public footprint is limited to its investment activity in enterprise technology. Any charitable giving by the principals appears to be conducted personally rather than through a branded institutional vehicle.
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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