SYN Ventures

Co-founders Jay Leek and Patrick Heim make all investment decisions. Leek was Blackstone's first CISO and a co-founder of ClearSky Security; Heim was CISO at Dropbox, McAfee, and Salesforce before joining ClearSky. Their backgrounds as operators rather than career investors shape the firm's entire underwriting process.

SYN invests directly into portfolio companies, writing seed and early-stage checks. There is no public record of SYN acting as a limited partner in other venture funds. The firm's model is built around hands-on board engagement from partners with operator backgrounds.

SYN's core stage coverage spans seed, Series A, and Series B. The firm occasionally participates in later-stage rounds for existing holdings but does not pursue growth-stage or pre-IPO cybersecurity deals as a primary mandate.

Both SYN co-founders previously worked at ClearSky Security — Leek as a co-founder and managing partner, Heim as a managing director. SYN is a separate legal entity and fund operation launched in 2021, though its investment approach and network reflect the earlier ClearSky experience.

There is no public disclosure of a philanthropic foundation or operating entity affiliated with SYN Ventures. The firm operates as a standalone venture capital partnership without reported adjacent structures.