Frank Willemsen

Frank Willemsen is listed as Angel Investor at Frank Willemsen. See sector focus, stage focus and contact routes.

About Frank Willemsen

Frank Willemsen is listed as Angel Investor at Frank Willemsen. Location on record: Los Altos, CA, United States. This profile is categorized as Individual/Angel. A LinkedIn profile is on record. No verified website or published biography is on record for this profile yet; the details above are limited to the fields held in this database as of August 9, 2026.

Frank Willemsen at a glance

Role
Angel Investor
Location
Los Altos, CA, United States
Investor type
Individual/Angel
Focus areas
Mr. Frank Willemsen serves as the President and Board Member at Sand Hill Angels.
Stages
Seed

Frequently asked about Frank Willemsen

What does Frank Willemsen invest in?
Frank Willemsen (Los Altos, CA, United States) — sector focus: Mr. Frank Willemsen serves as the President and Board Member at Sand Hill Angels.; stage focus: Seed.
How do I contact Frank Willemsen?
Frank Willemsen's published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.
Where is Frank Willemsen headquartered?
Frank Willemsen is based in Los Altos, CA, United States.

Details on this firm come from filing and round data held in the StartupFundraising directory, refreshed on ingest. Founders use profiles like this one to qualify fit and to shortlist investors in Los Altos.

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