Quiet Capital
VC Fund
San Francisco, United States
Quiet Capital is a technology investment firm.
- Total investments:
- 378
- Last investment:
- Lead investor:
- 12%
- Fund size:
- $100M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Quiet Capital invests in
Stages Quiet Capital invests in
Countries Quiet Capital invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Seed
- $1.8M–$15M
- Series A
- $10M–$43M
- Series B
- $22M–$65M
Investment Focus
Industry
- Software 57 (15%)
- Artificial Intelligence 28 (7%)
- Health Care 24 (6%)
- Information Technology 24 (6%)
- Financial Services 23 (6%)
Stage
- Seed 105 (28%)
- Series A 41 (11%)
- Series B 27 (7%)
- Pre-Seed 24 (6%)
- Funding Round 4 (1%)
Country
- United States 127 (34%)
- United Kingdom 7 (2%)
- India 4 (1%)
- Canada 4 (1%)
- Pakistan 4 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
David Greenbaum
Partner
|
Partner | Total investments: 5 | Find email | |
Ben Mahdavi
Managing Partner
|
Managing Partner | Total investments: 1 | Find email | |
|
Chris Capozzi
Partner & Chief Financial Officer
|
Partner & Chief Financial Officer | Total investments: 0 | Find email | |
Daniel Gruneberg
Partner
|
Partner | Total investments: 0 | Find email | |
Jeff Silverstein
Venture Partner
|
Venture Partner | Total investments: 4 | Find email | |
| See all 11 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
RWX
|
RWX is a software company that builds tools for optimizing reliability, building, test performance, and developer experience. | $12M / Series A / Aug 04, 2026 | |
Intropy AI
|
Intropy AI offers AI tools that automate sales coaching, lead generation, pricing, and ERP tasks for parts businesses. | $11M / Seed / Jul 30, 2026 | |
Assort Health
|
Assort Health is building healthcare that remembers.From call center automation and form intake to referrals, document processing, outreach, and payments, we manage the entire patient journey for providers. Our platform is the most widely used AI agents platform for the patient journey, built on 180 million specialty patient interactions and amodel that handles the complexity general-purpose AI can’t.Healthcare organizations see a 5% lift in appointment volume, a 115% increase in labor capacity, and a 4.3 out of 5 patient satisfaction score.With over $222M raised from Menlo Ventures, Lightspeed, First Round Capital, Apolo Ohno, and Joe Montana, Assort is becoming the standard for how providers use AI to transform the patient journey.Learn more at assorthealth.com | $120M / Series C / Jun 24, 2026 | |
Suno
|
Suno is a music start-up that enables anyone to make the songs they want. The company aims to help people rediscover the joy of play and exploration. | $400M / Series D / Jun 03, 2026 | |
NewLimit
|
NewLimit specializes in treating age-related diseases to extend the human health span. It works on developing epigenetic reprogramming medicines to treat diseases with large unmet needs. | $435M / Series C / Jun 02, 2026 | |
Quartermaster AI
|
Quartermaster AI is a defense technology company that develops real-time distributed marine software via AI robot technology. | $43M / Series A / May 20, 2026 | |
Manifest OS
|
Manifest OS is a legal technology company that provides infrastructure and operational support for law firms through a centralized platform and AI-based tools. The company offers services such as document drafting support, client communication management, billing, collections, and administrative operations, allowing attorneys to focus more on legalwork. Its platform is designed to support law firms operating under a unified brand while maintaining independent legal practices. Manifest OS works with firms handling areas such as individual and corporate immigration law and provides fixed-fee and workflow management systems intended to improve transparency for clients. The company also employs teams across engineering, operations, legal operations, and product development to support its technology and service model. | $60M / Series A / Apr 28, 2026 | |
Biossil
|
Biossil is an applied AI drug discovery platform to create specialized treatments for distinct patients. | $70M / Venture - Series Unknown / Apr 23, 2026 | |
Petual
|
Petual is building the AI-powered platform for audit and compliance, transforming how enterprises manage SOX, operational, financial, and compliance risk. Our intelligent agents deliver precision, coverage, and speed impossible with manual testing. | $20M / Seed / Apr 23, 2026 | |
Swarm Aero
|
Swarm Aero is an aerospace and defense company that develops large-scale unmanned aerial vehicle (UAV) swarms to operate in coordinated drone swarms for defense, logistics, and sensing missions. The company builds large uncrewed aircraft and supporting software that allow multiple drones to collaborate and perform tasks as a coordinated networkrather than as independent vehicles. These systems use onboard computing, sensors, and artificial intelligence to enable autonomous flight behaviors and collective decision-making among groups of drones. The technology platform includes aircraft hardware, swarm coordination software, and command-and-control tools that allow operators to deploy and manage large numbers of drones. A swarm node architecture integrates edge computing and distributed sensors on each vehicle so that drones can communicate with one another, share environmental data, and adapt their behavior during missions. Through this system, operators can translate mission objectives into coordinated flight patterns and task assignments executed by the swarm.Swarm Aero’s aircraft and software systems support applications such as intelligence gathering, environmental monitoring, cargo delivery, communications relay, disaster response, and security operations. The platform is designed to enable operations in environments where communications may be limited or conditions change rapidly, allowing autonomous drones to coordinate actions and adjust routes in real time. | $35M / Series A / Mar 11, 2026 | |
| See all 378 investments → | |||
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FAQ
What does Quiet Capital invest in?
Quiet Capital invests primarily in Software, Artificial Intelligence and Health Care startups, most often at Seed and Series A stage. Most of the 378 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 Quiet Capital's check size?
Quiet Capital typically joins rounds of $1.8M–$15M at Seed, $10M–$43M at Series A and $22M–$65M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Quiet Capital participates in.
How do I contact Quiet Capital?
Public channels for Quiet Capital include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at Quiet Capital?
The team at Quiet Capital includes David Greenbaum (Partner), Ben Mahdavi (Managing Partner) and Chris Capozzi (Partner & Chief Financial Officer), among 11 team members tracked by Shizune. The Team section lists each member with their title, investment count and links.
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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