CEO Abhinav AsthanaFounded 2014HQ San Francisco, US
Postman is a privately held American software company that provides an API platform for building, testing, and managing APIs, used by millions of developers and hundreds of thousands of organizations worldwide. The company simplifies the API lifecycle and enhances collaboration across engineering teams.
Access to pre-IPO shares is available to accredited investors through UpMarket.
Latest Price
$5.6B
Series D, Aug 2021, Perplexity
UpMarket Estimate
$4.8B
Based on UpMarket valuation model
Previous Price
Series C Apr 2019
How to Invest in Postman Through UpMarket
Postman shares are not on public exchanges. UpMarket provides accredited investors access through secondary market transactions.
Step 01
Verify accredited investor status
Confirm eligibility under SEC Rule 501 of Regulation D. Income or net worth threshold applies.
Step 02
Create an UpMarket account
Complete KYC/AML onboarding. Typically 1–2 business days. Licensed rep assigned on signup.
Step 03
Review available Postman offerings
Full offering memoranda and risk disclosures provided before any commitment is required.
Step 04
Complete subscription documents
Review and sign subscription agreement. All documents handled digitally through the platform.
Step 05
Fund your investment
Wire transfer or ACH. $50K minimum. Funds held in custodial account until close.
Pre-IPO investments are illiquid, speculative, and involve risk of total loss of capital.
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Valuation Growth Over Time
Post-money valuation by round
Previous roundsMost recent
Date
Round
PPS (split-adj.)
Valuation
Aug 2021
Series D
$5.6B
Apr 2019
Series C
Jun 2018
Series B
Feb 2017
Series A
2015
Seed
Postman Revenue and Growth
Annual revenue
Why Investors Are Watching Postman
Growth Signal
Postman raised $225M at a $5.6B valuation in Series D
Postman announced a $225 million Series D round that valued the company at $5.6 billion. The raise was framed as fuel for its API-first platform strategy and expansion of the API lifecycle product set.
Competitive Moat
Postman says it serves 30M+ developers and 500K orgs
Postman says its platform is used by more than 30 million developers and 500,000 organizations, including 98% of the Fortune 500. That scale across individual users and enterprise accounts suggests strong product-led adoption and embedded workflow depth.
Market Opportunity
Postman is positioned as the leading API platform
Postman describes itself as the world's leading API platform, spanning the API lifecycle and collaboration workflow. It also reports offices in San Francisco, Bangalore, and Tokyo, indicating an international operating footprint.
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No. As of March 2026, Postman is a private company and does not trade on any public stock exchange. Accredited investors can access Postman shares through UpMarket, a FINRA-registered broker-dealer that specializes in pre-IPO investments.
Postman does not have a public stock price because it is privately held. The most recent known share price comes from its last funding round. Pre-IPO share prices on the secondary market may differ from the last round price depending on supply, demand, and market conditions.
Yes. Accredited investors can indicate interest in Postman shares through UpMarket by filling out the form on this page or creating an account at upmarket.co. All pre-IPO offerings are subject to availability and require a $50,000 minimum investment. UpMarket is a FINRA-registered broker-dealer and has brokered alternative investments since 2019.
Pre-IPO investments carry significant risks. Postman shares are illiquid, meaning there is no public market to sell them quickly. There is no guaranteed exit timeline or return. The investment is speculative in nature, and investors should be prepared for the possibility of total loss. Valuations of private companies can fluctuate substantially between funding rounds. Investors should consult their financial advisor and review all offering documents before investing.
In a pre-IPO transaction, accredited investors purchase shares from existing shareholders (such as employees, early investors, or other holders) through secondary market platforms. The company itself does not issue new shares in these transactions. UpMarket facilitates these trades as a FINRA-registered broker-dealer, handling compliance, documentation, and settlement on behalf of both parties.
There are two primary exit paths for pre-IPO holdings: selling your shares on the secondary market to another buyer, or holding until the company completes an IPO or is acquired. Both paths are subject to transfer restrictions, company approval (right of first refusal), and market conditions. The timing of any exit is unpredictable, and investors should plan for a multi-year holding period.
The minimum investment for most pre-IPO offerings on UpMarket is $50,000. This amount may vary depending on the specific offering and share availability. There are no fees to create an UpMarket account or browse available investments. Investors only pay transaction-related fees when they complete an investment.
UpMarket's valuation estimate of is derived from a proprietary model that incorporates multiple data sources: funding round data (Caplight), revenue estimates (Sacra), secondary market pricing, and public company comparables. The model applies a private company discount to the public comp multiple to account for illiquidity and information asymmetry. This estimate is not investment advice and may differ substantially from the price at which shares actually trade.
Postman provides an API platform for building, testing, and managing APIs, generated $313.1M in 2024 revenue, and raised $225M at a $5.6B valuation in its Series D — accredited investors can access Postman stock through UpMarket.