Active: new fund Sep 2026 Verified 4 Nov 2026
Mayfield
Early-stage venture firm that says it invests in AI companies, with 70% of investments made at inception. Cites 120 IPOs and 225+ acquisitions in its track record.
- Type
- VC firm
- Location
- Menlo Park, California, United States
- Stages
- Pre-seed
- Backs
- B2B software
- Sectors
- AI, Semiconductors, Consumer, Healthtech and life sciences
- Fund size / AUM
- Fund size not disclosed on Form D
- Latest fund or filing
- 18 Sep 2026
- Portfolio mix
- B2B software 63%; Deep tech 13%; Biotech and pharma 10%; Consumer apps 3%; Consumer products 3%; Crypto and web3 3%; Medtech and digital health 3% (n=30)
- Website
- www.mayfield.com
Fund filings (SEC Form D)
- Latest fund on file
- MFO Fund, L.P., a Delaware
- Filed
- 18 Sep 2026 (new notice)
- Fund size
- Not disclosed on the filing
- Fund vehicles filed in the last 12 months
- 1 (includes feeder and parallel vehicles)
See this fund's filings on SEC EDGAR
Contacts on file
For Mayfield, the paid file holds: 2 named decision-makers with roles; LinkedIn page.
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Notable investments
hashicorpsecuriti.ailyftOutreachposhmark.com
Sources
- www.sec.gov/Archives/edgar/data/2155144/000215514426000003/
- adviserinfo.sec.gov/firm/summary/161685
- www.mayfield.com/
- www.mayfield.com/meet-our-founders/
Last checked 4 Nov 2026. Is something wrong? Tell us.
Appears in 41 lists
Pre-seed semiconductor investors (18)Semiconductor venture capital firms in the US (42)Consumer investors in Silicon Valley (43)Semiconductor investors (58)Pre-seed investors in Silicon Valley (75)Consumer investors in the San Francisco Bay Area (86)Healthtech investors in Silicon Valley (91)Pre-seed consumer investors in the US (104)Consumer investors in California (130)Pre-seed consumer investors (162)Pre-seed investors in the San Francisco Bay Area (164)SaaS investors in Silicon Valley (169)AI investors in Silicon Valley (172)Healthtech investors in the San Francisco Bay Area (182)Pre-seed investors in California (207)Pre-seed healthtech investors in the US (225)Healthtech investors in California (240)Venture capital firms in Silicon Valley (341)SaaS investors in the San Francisco Bay Area (347)Consumer venture capital firms in the US (348)AI investors in the San Francisco Bay Area (364)Pre-seed SaaS investors in the US (367)Pre-seed AI investors in the US (403)Pre-seed healthtech investors (408)SaaS investors in California (433)AI investors in California (464)Consumer investors (512)Pre-seed investors in the US (549)Pre-seed SaaS investors (562)Pre-seed AI investors (633)Healthtech venture capital firms in the US (709)Venture capital firms in the San Francisco Bay Area (768)Pre-seed investors (988)Venture capital firms in California (1,038)SaaS venture capital firms in the US (1,049)AI venture capital firms in the US (1,112)Healthtech investors (1,207)SaaS investors (1,529)Active venture capital firms in the US (1,574)AI investors (1,576)Venture capital firms in the US (2,975)