Tminus10

Tminus10

Tminus10 was formed in 2022 by Evan Goldstein, who made his personal fortune from the exit of 4Cite Marketing, a customer identity and personalization platform. Valid acquired 4Cite in 2020 in a deal valued at $575 million, creating the liquidity to stand up a dedicated family office two years later. The office's name, a reference to a countdown clock, signals an orientation toward timeliness and velocity in capital deployment. The firm makes direct equity investments in technology companies, focusing on seed through Series A rounds with check sizes reportedly in the $500,000 to $2 million range. Sectors of interest include enterprise software, digital health, fintech infrastructure, and applied artificial intelligence. Known portfolio positions include Siena AI, an autonomous customer service platform; Beam Health, a virtual primary care and mental health provider; and Crossbeam, a partner ecosystem platform. Goldstein participates actively in syndicates and SPVs, often alongside other operator-led family offices, and has co-invested with individuals from the Founder Collective and Operator Collective networks. The geographic footprint concentrates on the United States, particularly New York and the Bay Area, with select exposure to Israeli technology companies. Tminus10 operates with a lean principal-led structure. Goldstein remains the sole managing partner and primary investment decision-maker, supported by a small network of venture partners and deal sourcers rather than a full-time investment team. In November 2023, Goldstein appeared on the Family Office Club podcast to discuss the firm's posture on direct deals versus fund commitments, noting a strong preference for direct negotiation of term sheets and lead-investor rights. There is no known philanthropic vehicle formally separated from the office, though Goldstein has publicly supported the Jewish Communal Fund and UJA-Federation of New York through donor-advised giving vehicles. The firm's structure as a post-exit operator-led office places it at the center of a growing peer network of solo capitalists and family offices that syndicate deals without a management-company overlay. That architecture means portfolio companies interact directly with the principal rather than with an IC or junior partners, creating an approval timeline measured in days rather than weeks, a cadence that echoes the firm's name.