Filament Capital Management

Kyle Weaver, the firm's Chief Investment Officer and Managing Partner, jointly drives investment decisions with Partner Brett Berson. Weaver's background spans FirstMark Capital and Insight Partners, giving the firm both early-stage startup judgment and late-stage underwriting discipline, while Berson joined from First Round Capital with extensive Seed-stage experience.

Filament uses a research-driven sourcing model that is atypical for a venture firm of its size. The firm publishes lengthy, publicly available investment memos and sector analyses — for example, deep dives into robotic process automation or AI observability — well before taking meetings or writing checks. Founders and other VCs read those memos, which generates inbound deal flow and positions Filament as a domain expert rather than a reactive check-writer.

Filament operates with a syndication-first posture, frequently co-investing alongside firms like FirstMark, Felicis, and Battery Ventures in Seed and Series A rounds. It will lead or co-lead selectively, but its concentrated portfolio model means it prefers to partner with other established funds rather than pricing and structuring deals solo.

Filament has not disclosed a standardized check-size range, but given its Seed-to-Series-A focus and concentrated portfolio construction, typical initial checks likely fall in the $1 million to $3 million range, with reserves for follow-on pro-rata investments in breakout companies. As a relatively young 2018-vintage firm, its fund sizes remain moderate in a market where peers raised $100M-plus debut funds in the same period.

The structural differentiator is the firm's public research program. Filament publishes long-form investment theses and sector landscapes as a core part of its operating model, which functions as both a sourcing magnet and a credibility signal. Most venture funds under $500 million in AUM keep their proprietary research internal; Filament makes it public, creating a durable intellectual brand that compounds over multiple fund cycles.

Filament concentrates on enterprise software, AI and machine learning, fintech, digital health, and applied robotics and automation. The firm generally avoids consumer internet, hardware-heavy deep tech, and life sciences — sectors where its enterprise underwriting framework and research-first sourcing model would not translate into a repeatable edge.

Filament has not publicly disclosed its limited partner base or fund sizes. Based on the firm's institutional co-investor network — including FirstMark, Felicis, and Battery Ventures — it likely has access to endowment, foundation, and fund-of-funds LP capital, but the firm's own filings do not confirm this.