Garry Tan
Co-founder @ Posthaven
San Francisco, United States
Garry Tan is a seed investor at Posthaven in San Francisco focused on Software and Artificial Intelligence. Garry Tan is based out of Mountain View, California and is the President & CEO of Y Combinator. Garry Tan attended Stanford University.
- Total investments:
- 311
- Last investment:
- Lead investor:
- 35%
Last updated:
For AI agents: llms.txt
Industries Garry Tan invests in
Stages Garry Tan invests in
Countries Garry Tan invests in
Round sizes
Round size
- Seed
- $1M–$9.5M
- Pre-Seed
- $500k–$500k
- Series A
- $6M–$30M
Investment Focus
Industry
- Software 59 (19%)
- Artificial Intelligence 45 (14%)
- SaaS 23 (7%)
- Information Technology 22 (7%)
- Enterprise Software 17 (5%)
Stage
- Seed 88 (28%)
- Pre-Seed 42 (14%)
- Series A 38 (12%)
- Series B 18 (6%)
- Series C 9 (3%)
Country
- United States 152 (49%)
- Canada 4 (1%)
- United Kingdom 2 (1%)
- Mexico 1 (0%)
- Singapore 1 (0%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
dili
|
Dili provides an AI-powered compliance automation platform for construction, infrastructure, energy, and manufacturing projects. The platform automates prevailing wage compliance, certified payroll review, apprenticeship tracking, wage validation, compliance reporting, and audit workflows to help organizations manage regulatory requirements forfederally funded projects. | $15M / Series A / Jul 30, 2026 | |
Odyssey
|
Odyssey operates as an AI start-up, provides hollywood-grade visual AI. | $310M / Series B / Jun 17, 2026 | |
9 Mothers
|
9 Mothers offers an AI-powered C-sUAS point defense turret designed to engage multiple fast-moving drones. The initial product, EDDA, is a compact, energy-efficient, and affordable fully autonomous counter-drone system. | $500K / Pre-Seed / Jun 16, 2026 | |
FinalDose
|
FinalDose develops programmable DNA therapeutics that target diseases at the level of their underlying genetic code. The company focuses on a DNA drug platform that uses engineered fusion proteins to scan cellular genomes for predefined diseased DNA sequences. When the therapeutic recognizes its programmed target, it undergoes a structural changethat activates a cellular kill switch to eliminate the diseased cell while sparing neighboring healthy tissue. This approach aims to address disease drivers that are considered undruggable by conventional protein-targeting methods. FinalDose initially applies its platform to cancers driven by complex mutations, using established human genetics knowledge to guide target selection and reduce research and validation cycles. | $500K / Pre-Seed / Jun 16, 2026 | |
Clawvisor
|
Clawvisor provides a credential-vaulting gateway and authorization layer for AI agents that need access to external applications and APIs. The platform sits between agents, third-party APIs, and LLM providers to mediate every tool call against an approved task purpose. It keeps API keys and OAuth tokens in an encrypted vault, injects credentialsserver-side, and prevents agents from directly handling secrets. Clawvisor verifies each request using purpose-based authorization, blocking prompt-injection attempts, scope creep, and inconsistent actions before they reach provider APIs. The product offers human-in-the-loop approvals, risk scoring, and detailed per-task audit logs across connected services such as email, calendars, storage, messaging, version control, and payments. Clawvisor is available as a hosted cloud service and as self-hosted software that can run on private infrastructure for teams and organizations deploying agentic workflows. | $500K / Pre-Seed / Jun 16, 2026 | |
jo
|
jo is a personal AI assistant chatbot that connects apps to deliver a daily morning brief and to-do list based on the user. | $500K / Pre-Seed / Jun 16, 2026 | |
Silmaril
|
Silmaril protects generative AI applications from prompt injections and vulnerabilities by deploying an automated, real-time security firewall. | $500K / Pre-Seed / Jun 16, 2026 | |
Ploy
|
Ploy is an AI growth platform that builds, optimizes, and operates a company's website and marketing channels. | $27M / Seed / Jun 14, 2026 | |
Advanced Metal Research
|
Advanced Metal Research develops robotic welding systems that combine computer vision, real-time seam tracking, and post-weld inspection. | $500K / Pre-Seed / Jun 01, 2026 | |
Fazeshift
|
Fazeshift provides an AI-driven solution that automates invoicing, cash application, and collections for enterprises. The platform enhances cash flow management by streamlining accounts receivable processes and reducing errors. Fazeshift adapts to unique business challenges, offering customizable workflows to improve operational efficiency. | $17M / Series A / May 07, 2026 | |
| See all 311 investments → | |||
Co-Investors
About Posthaven
Posthaven is a importer for your Posterous blogs. The service costs $5 per month. Posterous is shutting down on April 30th.
Posthaven Contacts
| Name | Phone | Socials | |
|---|---|---|---|
|
Garry Tan
Co-founder
|
|||
4 more contacts available
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FAQ
What does Garry Tan invest in?
Garry Tan invests primarily in Software, Artificial Intelligence and SaaS startups, most often at Seed and Pre-Seed stage. Most of the 311 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Garry Tan's check size?
Garry Tan typically joins rounds of $1M–$9.5M at Seed, $500k–$500k at Pre-Seed and $6M–$30M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Garry Tan participates in.
When did Garry Tan last invest?
The most recent investment recorded for Garry Tan closed in Jul 2026. Shizune tracks 311 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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