Directory
Michael Seibel

Michael Seibel

Verified: Jun 2026 (SMTP Validated)👑 Lead Investor
San Francisco, CA
𝕏in
Check Size Range

Flexible Check Size

Preferred Stages
pre-seedseed

Background & Investment Thesis

Partner at Y Combinator. Co-founder of Twitch and Justin.tv. Consumer video expert.

Focus Industries

consumersaasmarketplacemedia

Notable Portfolio & Backed Deals

AI Outreach Insight94% Match Score

Active investor in consumer, saas, marketplace, media. Highly responsive to concise pitches with clear traction metrics.

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Key Deal Terms & Quick Facts

Audited venture due diligence summary for Michael Seibel

Verified Deal Signals
Typical Check Size

$500k – $5M

Direct angel check per syndicate / round
Target Stages
pre-seedseed
Early-stage entry valuation priority
Founder Pitch Contact

Verified (Protected — Unlock)

Direct mailbox protected against spam
Focus Industries & Categories
consumersaasmarketplacemedia
Notable Backed Deals & StartupsInternal company dossiers
TwitchJustin.tvSocialcam

Frequently Asked Questions about Michael Seibel

What is Michael Seibel's typical angel check size?▼

Michael Seibel's investment check size typically ranges around $500k – $5M, participating in early-stage financing rounds alongside leading venture capital funds and angel syndicates.

What stages and sectors does Michael Seibel invest in?▼

Michael Seibel primarily backs early-stage startups across pre-seed, seed stages, focusing on consumer, saas, marketplace, media.

What companies are in Michael Seibel's angel portfolio?▼

Michael Seibel has backed notable companies including Twitch, Justin.tv, Socialcam.

How can startup founders contact or pitch Michael Seibel?▼

Founders can access verified direct email contact channels, AI-assisted pitch drafting, and syndicate warm intro paths for Michael Seibel through OpenAngels.