# Tethr funding: rounds and investors > Tethr has raised $45M across 3 rounds since 2017. Investors include IAG Capital Partners, Alumni Ventures and Grotech Ventures. Every round with its source. Source: https://millionrounds.com/company/tethr (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Tethr* 3 rounds we have observed, with the 6 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Big Data & Analytics Funding summary Updated 26 Oct 2026 **$45M** raised across 3 rounds since 2017, from 3 sources **$15M** Series A **$15M** Round **$15M** Venture - **Latest round:** Venture, $15M Dec 2021 - **Investors:** 6 (1 led) See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2018 2019 2020 2021 **$15M** Series A **$15M** Round **$15M** Venture - **First round:** Series A, $15M - **Biggest round:** $15M - **Usual gap between rounds:** 2.2 years ## The rounds - **Dec 2021** Venture **$15M** *1 new* *1 returning* [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [IAG Capital Partners](https://millionrounds.com/fund/iag-capital-partners) Source recorded - **Sept 2019** Round **$15M** *4 new* [IAG Capital Partners](https://millionrounds.com/fund/iag-capital-partners) Lead [Grotech Ventures](https://millionrounds.com/fund/grotech-ventures) [MissionOG](https://millionrounds.com/fund/missionog) [Falmouth Ventures](https://millionrounds.com/fund/falmouth-ventures) Reported by FinSMEs - **Oct 2017** Series A **$15M** *1 new* Grotech Ventures/ MissionOG Reported by FinSMEs ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Series A** 2017 **Round** 2019 **Venture** 2021 [IAG Capital Partners](https://millionrounds.com/fund/iag-capital-partners) L [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Grotech Ventures](https://millionrounds.com/fund/grotech-ventures) [MissionOG](https://millionrounds.com/fund/missionog) [Falmouth Ventures](https://millionrounds.com/fund/falmouth-ventures) Grotech Ventures/ MissionOG ## Everyone who backed them [IAG Capital Partners](https://millionrounds.com/fund/iag-capital-partners) Private equity **2** rounds, led 1 [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **1** round [Grotech Ventures](https://millionrounds.com/fund/grotech-ventures) VC firm **1** round [MissionOG](https://millionrounds.com/fund/missionog) VC firm **1** round [Falmouth Ventures](https://millionrounds.com/fund/falmouth-ventures) VC firm **1** round Grotech Ventures/ MissionOG no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=tethr). ## Quick answers about Tethr ### Who invested in Tethr? Tethr's investors include IAG Capital Partners, Alumni Ventures, Grotech Ventures, MissionOG and Falmouth Ventures, and 1 more on record. ### How much has Tethr raised? Tethr has raised $45M across 3 rounds since 2017. ### When did Tethr last raise? Tethr's most recent round was a Venture of $15M in Dec 2021. ### What was Tethr's biggest round? Its most recent round, $15M in Dec 2021, is also its largest on record. ### Who backed Tethr first? Tethr's first round on record, in Oct 2017, was backed by Grotech Ventures/ MissionOG. ### What stage is Tethr at? Tethr's latest named round is a Venture, in Dec 2021. ### Where is Tethr based? Tethr is based in the United States. ### Who led Tethr's rounds? IAG Capital Partners led the Undisclosed round in 2019. ## Companies like Tethr In the same sector, and raised in the last eighteen months. [**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**STRIVE** $1.3B · Oct 2026](https://millionrounds.com/company/strive)[**Xona** $512M · Oct 2026](https://millionrounds.com/company/xona)[**DrizzleX** $9.1M · Oct 2026](https://millionrounds.com/company/drizzlex)[**Prism Data** $25M · Oct 2026](https://millionrounds.com/company/prism-data)[**Homa** $5.0M · Oct 2026](https://millionrounds.com/company/homa) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app