Venture Guides | Activity | F4

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Venture Guides Activity

Every public signal F4 has attached to this firm, with sources and cross-entity links.

Types

Time range

4 investments· JAN 2026 – MAY 2026Show all

Investment

Continued as an existing investor in Blitzy's $200M round (led by Northzone) at a $1.4B valuation.

Blitzy

Blitzy Venture Guides

businesswire.comMAY 2026

MAY 2026

Investment

Led SpartanX's seed round as the autonomous offensive-security company established its global HQ in Boston.

SpartanX

SpartanX Venture Guides

globenewswire.comAPR 21, 2026

APR 21, 2026

Investment

Participated in Memcyco's $37M Series A for digital impersonation and account-takeover fraud prevention.

Memcyco

Memcyco Venture Guides

businesswire.comJAN 27, 2026

JAN 27, 2026

Investment

Co-led IO River's $20M Series A (with New Era) to decouple edge infrastructure from services.

IO River

IO River Venture Guides

siliconangle.comJAN 14, 2026

JAN 14, 2026

Exit

Portfolio company Tromzo was acquired by Checkmarx to combine agentic application security capabilities.

Tromzo

Tromzo Venture Guides

tromzo.comDEC 9, 2025

DEC 9, 2025

News

Co-founder Sage Nye was named to the Forbes 30 Under 30 Venture Capital Class of 2026.

Forbes 30 Under 30 Venture Capital Class of 2026

forbes.comDEC 2, 2025

DEC 2, 2025

Investment

Co-led Ray Security's $11M seed round (with Ibex Investors) as it exited stealth with an AI-powered predictive data security platform.

Ray Security

Ray Security Venture Guides

businesswire.comSEP 16, 2025

SEP 16, 2025

New Fund

Closed Fund II at $262.5 million, a 21% step-up from its $216.5 million Fund I, oversubscribed within eight weeks.

Fund II

businesswire.comAPR 22, 2025

APR 22, 2025

Investment

Led env0's $35.1M Series A, the firm's first major investment from its debut fund.

env0

env0 Venture Guides

businesswire.comMAR 29, 2023

MAR 29, 2023