Glasswing Ventures

Rudina Seseri and Rick Grinnell serve as co-founders and managing partners, jointly steering the investment committee. Seseri leads the firm's AI and enterprise software practice from Boston, while Grinnell oversees the cybersecurity vertical. The partnership flat structure ensures every term sheet reflects agreement between the two managing partners.

Glasswing built an internal data platform that maps AI research clusters, academic labs, and technical founder networks before companies formally raise capital. The firm also maintains a technical advisory board of AI practitioners who surface unmarketed opportunities. This dual-lens approach — algorithmic scanning plus practitioner networks — is designed to surface deals before they reach generalist seed-stage auction processes.

Glasswing exclusively makes direct investments into operating companies at the pre-seed and seed stages. The firm does not allocate to external venture capital funds as a limited partner. Capital is reserved for initial checks and structured follow-on participation in subsequent rounds through dedicated reserves.

The firm targets pre-seed and seed-stage investments and may selectively participate in Series A extensions. Initial check sizes typically range from $1 million to $4 million, with reserves for pro-rata follow-on in rounds led by later-stage co-investors. Glasswing does not pursue growth-stage or pre-IPO opportunities.

Glasswing was purpose-built around an AI-and-cybersecurity convergence thesis in 2016, years before the category became crowded. The partnership layers a proprietary internal data platform — built to map academic research output and founder networks — with an operator-heavy investment team. Most generalist seed funds apply AI as a thematic overlay; Glasswing's entire process, from sourcing to diligence, was architected for technical founders.

Glasswing actively co-invests alongside other venture capital firms, including generalist multi-stage funds and sector-specific peers. The firm leads or co-leads rounds and does not require a board seat in every transaction. Syndication partners typically include East Coast early-stage firms and specialized cybersecurity investors with complementary expertise.

Glasswing does not invest in consumer internet, hardware-dependent deep tech requiring fabrication, or therapeutics. The firm's mandate excludes pure-play fintech, climate solutions without a core AI component, and any company where the technical differentiation is not the central investment thesis.