Prefix Capital

Byron Alsberg and Owen Van Natta, both founding partners, make investment decisions together. Alsberg’s background covers semiconductor and voice-technology operating roles at Texas Instruments and Audience, plus two startup exits; Van Natta held executive roles at Amazon, Facebook, News Corp, and Zynga. Calvin Ling, the founding principal, supports diligence and portfolio operations but is not listed as an investment committee member.

The firm sources opportunities primarily through the personal networks of its founding partners — Van Natta from the consumer-internet and social-media executive ecosystem, and Alsberg from the semiconductor, enterprise-software, and startup-operator communities. The partnership’s combined relationships, formed at companies including Amazon, Facebook, and Texas Instruments, function as the primary origination channel. No external sourcing platform or scout network is disclosed.

Prefix Capital is structured as a venture firm, not a family office. The firm’s website describes it as an investor in early-stage deep technology and lists three team members managing outside capital on a partnership model. There is no public indication of a single-family wealth source backing the vehicle. The asset management designation in corporate records separates it from multi-family office structures.

Prefix Capital focuses on early-stage companies, specifically startups and seed-to-Series A rounds within deep technology sectors. The firm’s stated scope includes companies still commercializing foundational research, consistent with the stage range indicated in structured research. No growth-stage or late-stage participation has been disclosed.

The firm invests across enterprise software, artificial intelligence and machine learning, consumer electronics, semiconductor-adjacent industrial technology, and biotechnology — all mapped to the deep-tech thesis described on their website. Byron Alsberg’s background with Audience and Texas Instruments and Owen Van Natta’s consumer-internet lineage at Amazon and Facebook inform this cross-section. No explicit negative sector exclusions are stated.

Based on the available public record, Prefix Capital executes direct equity investments in portfolio companies and has not disclosed any fund-of-funds commitments or co-investment participation alongside external GPs. The firm’s small team size and concentrated early-stage strategy suggest a direct-investment-only model, though no formal statement confirms this stance.

The firm has not publicly disclosed a formal co-investment program or track record of investing alongside other venture firms. Its operating model — a lean partnership with no listed limited partners on the website — leaves the funding structure ambiguous. Allocators considering co-investment opportunities would need to confirm the firm’s willingness to share deal flow directly with the partnership.