# lettrs funding: rounds and investors

> lettrs has raised $4.8M across 5 rounds since 2008. Investors include Three Tree Ventures and Armed forces veterans. Every round with its source.

Source: https://millionrounds.com/company/lettrs (Millionrounds; every figure on the page links to its filing or article)

United States · [Funded startup](https://millionrounds.com/companies)

# Who invested in *lettrs*

5 rounds we have observed, with the 2 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.

Cybersecurity

Funding summary Updated 26 Oct 2026

**$4.8M** raised across 5 rounds since 2008, from 5 sources

**$10K** Seed **$250K** Seed **$1.5M** Venture **$3.0M** Round

- **Latest round:** Round, $3.0M Nov 2017
- **Step-up i:** 2×
- **Investors:** 2

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.

2008 2010 2012 2014 2016

**$10K** Seed

**$250K** Seed

**?** Seed

**$1.5M** Venture

**$3.0M** Round

- **First round:** Seed, $10K
- **Biggest round:** $3.0M
- **Usual gap between rounds:** 3.1 years

## The rounds

- **Nov 2017** Round **$3.0M** *1 new* Armed forces veterans Reported by FinSMEs
- **Oct 2014** Venture **$1.5M** No investor was named in the report. From a historical funding record
- **Jul 2014** Seed **Amount undisclosed** *1 new* [Three Tree Ventures](https://millionrounds.com/fund/three-tree-ventures) From a historical funding record
- **Jun 2013** Seed **$250K** No investor was named in the report. Reported by mashable.com
- **Aug 2008** Seed **$10K** No investor was named in the report. Reported by internetevolution.com

## 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.

**Seed** 2008 **Seed** 2013 **Seed** 2014 **Venture** 2014 **Round** 2017 [Three Tree Ventures](https://millionrounds.com/fund/three-tree-ventures) Armed forces veterans

## Everyone who backed them

[Three Tree Ventures](https://millionrounds.com/fund/three-tree-ventures) Family office **1** round

Armed forces veterans 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=lettrs).

## Quick answers about lettrs

### Who invested in lettrs?

lettrs's investors include Three Tree Ventures and Armed forces veterans.

### How much has lettrs raised?

lettrs has raised $4.8M across 5 rounds since 2008. One round did not disclose an amount, so the total is a floor.

### When did lettrs last raise?

lettrs's most recent round was an Undisclosed round of $3.0M in Nov 2017.

### What was lettrs's biggest round?

Its most recent round, $3.0M in Nov 2017, is also its largest on record.

### Who backed lettrs first?

lettrs's first round on record, in Jul 2014, was backed by Three Tree Ventures.

### What stage is lettrs at?

lettrs's latest named round is an Undisclosed round, in Nov 2017.

### Where is lettrs based?

lettrs is based in the United States.

## Companies like lettrs

In the same sector, and raised in the last eighteen months.

[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Opsin** $21M · Oct 2026](https://millionrounds.com/company/opsin)[**Harmonic Security** $68M · Oct 2026](https://millionrounds.com/company/harmonic-security)[**Reach Security** $60M · Oct 2026](https://millionrounds.com/company/reach-security)[**Persona** $210M · Oct 2026](https://millionrounds.com/company/persona)[**Hilt** $4.7M · Oct 2026](https://millionrounds.com/company/hilt)

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