IWR Advisors

John Osterweis founded Osterweis Capital Management, the mutual fund company, before launching IWR Advisors in 1994. While they share a common founder and investment heritage, IWR operates as a separate multi-family office focused on private wealth management for technology entrepreneurs and their families, rather than managing public mutual funds.

Matt Berler serves as CEO, and the investment process reflects the concentrated, quality-oriented philosophy John Osterweis developed over decades of public-markets investing. The firm runs a lean investment committee structure rather than a large analyst bench, consistent with its multi-family office model.

IWR Advisors is structured as a multi-family office, meaning it manages capital for multiple client families — primarily West Coast technology founders and executives — rather than operating as a single-family office for the Osterweis family. It does not market funds to the general public.

IWR accesses early-stage venture investments, typically writing checks into Series Seed through Series B rounds in enterprise software, fintech, and digital health. The firm co-invests alongside established Bay Area venture firms rather than leading rounds, and it also commits to select venture capital funds as a limited partner.

The firm sources deals through its deep network in the San Francisco and Silicon Valley technology ecosystem, built over three decades of serving founders, executives, and their families. Because IWR operates primarily on referrals and does not publicly market its services, deal flow comes from relationships rather than a formal origination team or platform.

IWR provides the full multi-family office service stack: estate planning, tax coordination, trust administration, philanthropic giving strategy, and family governance advice. The firm integrates these services with its investment management rather than outsourcing them to a separate provider.

IWR Advisors operates as a registered investment advisor, subject to SEC oversight. It serves a concentrated client base of technology families and maintains a deliberately low-profile, referrals-only practice rather than pursuing an institutional growth strategy.