Saam Motamedi

Who they are

Saam Motamedi is a General Partner at Greylock Partners — became the firm's youngest GP at age 26 and led the seed round for Cogent, an AI cybersecurity platform.

Person

Saam joined Greylock in 2016 and, according to available claims, became its youngest General Partner at age 26 — a signal that he moved fast inside one of Silicon Valley's oldest firms. He holds a Bachelor of Science from Stanford University. His investment focus sits at the intersection of AI/ML, cybersecurity, and enterprise software, and his board portfolio reflects that precisely: Apiiro, Abnormal AI, Upwind Security, and Cresta are all bets on AI-native products reshaping security or enterprise workflows. He also holds board seats at Snorkel AI and Braintrust, and counts Anthropic and Wiz as portfolio investments. Possibly — the consistent thread is conviction in AI infrastructure before it became consensus: Snorkel AI was pre-mainstream data-labeling, Abnormal AI was early AI email security, and Anthropic was a long-horizon foundation model bet. Possibly — his public writing signal is low, suggesting he does his work in the boardroom rather than on the content circuit.

Company

Greylock's most recent deal activity runs through early 2026: in March 2026 the firm led a $54 million round for Axiamatic, an agentic platform for enterprise transformation, alongside Bessemer Venture Partners. In February 2026, Greylock co-invested in a $53 million round for Cogent, an AI cybersecurity company automating vulnerability detection and remediation — a round led by Bain Capital Ventures with Definition, and one where Greylock partner Saam Motamedi had previously led Cogent's seed. The firm made 24 investments in 2025 and 7 in early 2026. On the exit side, portfolio company Chronosphere was acquired by Palo Alto Networks for $3.35 billion in November 2025, Figma listed on NYSE at $13.5 billion in December 2025, and Wealthfront IPO'd on NASDAQ at a $2.05 billion market cap the same month. Greylock closed its 17th fund at $1 billion in 2023 and runs the Greylock Edge program for pre-seed and seed founders.

Market

Greylock competes with other leading early-stage Silicon Valley firms — Bessemer Venture Partners, Bain Capital Ventures, and SV Angel are named competitors and frequent co-investors. The firm's cybersecurity portfolio places it in direct proximity to the consolidation wave Palo Alto Networks is driving, having already absorbed Greylock-backed Chronosphere. AI democratization and the shift to AI-native enterprise software are the macro tailwinds shaping Greylock's current investment thesis, with geopolitical and regulatory dynamics — export controls, cross-border compliance risks — increasingly relevant to portfolio companies operating globally.

Network

Saam's board relationships run deep in AI-native security and enterprise software. On the security side he works closely with Evan Reiser and Sanjay Jeyakumar at Abnormal AI, Idan Plotnik and Yonatan Eldar at Apiiro, and the Snorkel AI founding team including Alex Ratner and Chris Ré. On the enterprise AI side he sits alongside Ping Wu, Zayd Enam, Tim Shi, and Sebastian Thrun at Cresta.

Evan Reiser· Co-founder, Abnormal AI
Sanjay Jeyakumar· Co-founder, Abnormal AI
Idan Plotnik· Co-founder, Apiiro
Yonatan Eldar· Co-founder, Apiiro
Alex Ratner· Co-founder, Snorkel AI
Chris Ré· Co-founder, Snorkel AI
Sebastian Thrun· Co-founder, Cresta
Zayd Enam· Co-founder, Cresta

How they likely show up

Long tenure at Greylock since 2016 with a 'long-tenure' signal → likely builds conviction over multi-year cycles and values compounding relationships over deal-by-deal opportunism.
Became youngest GP at age 26 → moved quickly in a firm with a steep seniority ladder, suggesting he demonstrated differentiated judgment early, not just hustle.
Board seats concentrated in AI-native security (Apiiro, Abnormal AI, Upwind) and AI infrastructure (Snorkel AI, Braintrust) → has a coherent thesis he bets repeatedly on, not a diversified generalist style.
Possibly — low public writing signal → operates through direct relationships and board work rather than thought-leadership content; likely expects the same substance-over-signal approach from people he meets.
Led Cogent's seed, then supported its $53 million Series B → tracks companies through multiple rounds, suggesting he values founder continuity and long-horizon bets over quick flips.
Stanford BS combined with investor role at a top-tier firm from an early career stage → strong academic foundation, likely comfortable with technical depth in AI and infrastructure conversations.

Conversation tips

→ Come in with a specific thesis on AI in cybersecurity — his active bets (Cogent, Apiiro, Abnormal AI, Upwind) show this is where he has genuine pattern recognition, not just casual interest.
→ Reference a specific portfolio company by name rather than his fund generally — he's a board member, not a passive LP, so he'll engage on company-level dynamics more readily than fund-level talking points.
→ Don't expect him to be prolific on social — Possibly low public writing signal means he hasn't built a content persona, so referencing 'your tweets' or 'your posts' will likely land flat.
→ Ask about the through-line between data infrastructure (Snorkel AI, Braintrust) and security (Apiiro, Abnormal, Upwind) — that's a non-obvious portfolio construction choice worth exploring.
→ Treat the Chronosphere → Palo Alto Networks acquisition as a reference point for how he thinks about enterprise security consolidation — it's a live data point in his portfolio.

Toolbox

Openers

Open on Cogent — he led the seed, then Greylock co-invested in the $53 million Series B in February 2026. It's a specific, recent bet that shows where his cybersecurity thesis is pointing right now.
Reference the Chronosphere acquisition by Palo Alto Networks for $3.35 billion in November 2025 — it's a portfolio exit that sits at the intersection of his security focus and the consolidation wave reshaping the space.
Bring up Snorkel AI and Braintrust together — both are AI data infrastructure plays, and asking how he sees data infrastructure as a precondition for enterprise AI security is the kind of connective question that rewards preparation.

Discovery questions

You backed Cogent at seed and again at Series B — what did you see in the vulnerability remediation problem that made it a multi-round conviction rather than a wait-and-see?
Your cybersecurity portfolio spans code security (Apiiro), email security (Abnormal AI), and cloud security (Upwind) — is that deliberate platform thinking or is it a set of independent bets that happen to cluster?
Snorkel AI and Braintrust both sit in the AI data layer — how do you think about that infrastructure layer's durability as foundation models get better at self-supervising?

Avoid

Don't pitch him on a generic 'AI for enterprise' angle without a specific wedge — his portfolio shows he bets on precise problem spaces (vulnerability remediation, email threat detection, data labeling), not broad AI transformation narratives.

Make it yours