Quantstamp
quantstamp.com
Blockchain & Crypto
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Products
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Financials
Funding and backers
Total raised
$3.3M
4 rounds on record
Latest round
$2M
Convertible Note · Aug 2018 · 8 yr ago
Team
16
US Form 5500 (plan participants) · Dec 2025 · -24% in a year
Backers
5
Y Combinator, Eight Roads
The money's age
Long since its last round
98 months since the last round · not hiring
Momentum
15/100
in the news
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
2025
Team shrank to 16 was 21 · US Form 5500 (plan participants)
Aug 23, 2023
Launched Web3 Security Firm Quantstamp Launches Novel Economic Exploit Analysis Service to Combat Flash Loan Attacks · PRNewswire
Jun 5, 2023
Partnership Quantstamp x Hypernative Partner to Enhance Web3 Security · quantstamp.com
Aug 17, 2018
Raised a round Convertible Note $2M · SEC Form D
Apr 9, 2018
Raised a round Convertible Note $50k · SEC Form D
Jan 3, 2018
Raised a round Convertible Note $120k · SEC Form D
Jan 2018
Went through Y Combinator
Dec 27, 2017
Partnership Ink Protocol and Quantstamp Partner for Secure Decentralized Reputation and Payments · medium.com
Nov 17, 2017
Raised a round Convertible Note $1.1M · SEC Form D
2017
Founded
Tractionpublic signals, read monthly
Web presence
top 0.75%
of 133.2M domains by links, Common Crawl
Hacker News stories
2
best: 3 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Convertible Note | Aug 2018 | $2M | — | SEC Form D |
| Convertible Note | Apr 2018 | $50k | — | SEC Form D |
| Convertible Note | Jan 2018 | $120k | — | SEC Form D |
| Convertible Note | Nov 2017 | $1.1M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | Quantstamp, Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Richard MaExecutive Officer, DirectorSEC Form D
Steven StewartExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
Y Combinator 
Eight Roads 
Meta Planet 
TransLink Capital 
VentureSouq Investors in similar startupsfunds that back the companies most like this one
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Overview
Quantstamp is a blockchain security company founded in 2017 and based in San Francisco. It audits smart contracts and layer-two systems and has reviewed protocols securing a very large amount of value across decentralised finance. The firm also researches formal verification and advises institutions and public bodies on digital asset risk.
News
July Security Beat: Keys Over Code (Again?)
Crypto lost more than $240 million across 29 incidents in July 2026, up roughly 216% from June's $75.87M, even as the number of attacks fell from 40 to 29. For the second month running, the damage didn't come from clever contract exploits. The same failur
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Report
June Security Beat: Keys Over Code
$75.32M was lost across 32 crypto incidents in June, up from May's $59.52M. No coordinated campaign carried the month, but one targeted operation did. A targeted social-engineering attack against Humanity Protocol reached the keys behind the $H token and
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Report
May 2026 Security Beat
$59.52M was lost across 29 crypto incidents, down sharply from April's $635M. No single hack carried the month. The bigger story happened off-chain, where a self-propagating npm worm called Mini Shai-Hulud kept resurfacing in new waves through the month,
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Report
April 2026 Security Beat: Same Actors, New Targets
April was undoubtedly a rocky month in security. $635M was lost across 28 crypto incidents. The Axios npm package was compromised on day one, exposing an estimated 600,000 installs in three hours. Vercel was breached through a third party. Three major CVE
Read more
Report
The Exploit Race
Web3 is different from "normal software" for one brutal reason: bugs turn directly into money. In 2025 alone, an estimated $3.4B was stolen through crypto exploits. That incentive creates a uniquely hostile environment where attackers systematize vulnerab
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Report
Engineering Smart Contract Families for Solidity
Decentralized applications (dApps) (e.g., DEXes) increasingly span multiple Ethereum-compatible chains, such as a number of L2s. Although these chains are intended to be compatible with the Ethereum Virtual Machine (EVM), subtle differences in opcode impl
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Report
Will EIP-7702 Affect Your Code?
The upcoming EVM hardfork, Pectra, amongst other changes, will implement EIP-7702, a proposal introducing a new transaction type that allows Externally Owned Accounts (EOAs) to delegate-and later undelegate-their behavior to smart contracts. While this up
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Report
When AI Meets Blockchain: A Guide to Securing the Next Frontier
In recent months, AI agents have attracted significant attention by the promise of assisting users and automating complex processes across diverse applications. The rapid performance improvements of Large Language Models (LLMs) in natural language process
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Report
Monthly Hacks Roundup: March 2024
March was a volatile month for the web3 security landscape, with significant security breaches totalling over $152 million in losses. Read on as we dive into four major security incidents and the trends from last month
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Report
Modular Account: How Audits Can Help Shape Standards And Catalyze Mass Adoption
Quantstamp recently conducted a smart contract audit for Alchemy's Modular Account, a wallet implementation designed from the ground up for ERC-4337 and ERC-6900 compatibility including two plugins
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People
Richard Ma
Executive Officer, Director
Steven Stewart
Executive Officer, Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
San Francisco
United States
HQ
10-50 est. staff