When was Sublime Security founded?

Sublime Security was founded in 2017 and raised its 1st funding round 6 years after it was founded.

Where is Sublime Security located?

Sublime Security is headquartered in Washington, DC, United States.

Who is the current CEO of Sublime Security?

Josh Kamdjou of Sublime Security. They have also founded 1 company and are an angel investors in 1 startup.

How many employees does Sublime Security have?

As of Jun 30, 2026, the latest employee count at Sublime Security is 310.

Is Sublime Security a funded company?

Sublime Security is a funded company, having raised a total of $240M across 4 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Feb 22, 2023.

When was the latest funding round of Sublime Security?

Sublime Security's latest funding was a $***** Series C round on Oct 28, 2025, with participation from 7 investors.

Where does Sublime Security rank among its competitors?

Sublime Security ranks 1st amongst 3 active competitors, only 1 of which is funded. Sublime Security, which secured $150M in Oct, 2025.

Sublime Security - 2026 Company Profile, Team, Funding & Competitors

Sublime Security is a series C company based in Washington, DC (United States), founded in 2017 by Josh Kamdjou and Ian Thiel. It operates as an Offering anti phishing email security solution. Sublime Security has raised $240M in funding from investors like Index Ventures, IVP and Decibel. The company has 3 active competitors, including 1 funded and 1 that has exited. Its top competitors are Halon and Secure Mail Auth.

Company Details

Offering anti phishing email security solution. It prevents email attacks using AI and a transparent detection engine. It gains control and spend less time on email-originated incidents. It is a detection and response platform for securing email and users can write and run custom rules to block phishing attacks, hunt for threats, and more. The solutions they cover are malware and ransomware, business email compromise, credential phishing, and more.

Website: sublime.security
Social

Key Metrics

Founded Year

2017

Location

Washington, DC, United States

Stage

Series C

Total Funding

$240M in 4 rounds

Latest Funding Round

Series C, Oct 28, 2025, $*****

Investors

Index Ventures & 17 more

Ranked

1^st among 3 active competitors

Employee Count

310 as on Jun 30, 2026

Similar Companies

Halon & 1 more

View Sublime Security's full profile

Sublime Security is associated with 2 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
Sublime Security, Inc. CIN: 20221109183 , United States, Active	Jan 27, 2022	-	-	-
Sublime Security, Inc CIN: 320602876 , United States, Active	Dec 31, 2016	-	57 (As on Dec 31, 2024)	-

Sublime Security has raised a total funding of $240M over 4 rounds. Its first funding round was on Feb 22, 2023. Its latest funding round was a Series C round on Oct 28, 2025 for $*****. 7 investors participated in its latest round. Sublime Security has 10 institutional investors and 8 angel investors.

Here is the list of recent funding rounds of Sublime Security:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Oct 28, 2025	3871789	Series C	6038907	1975767	8477675	9916582
Dec 12, 2024	1270476	Series B	9093723	4739386	5832579	Citi Ventures & 3 more
Apr 24, 2024	8898067	Series A	9624915	5625346	Index Ventures	Decibel & 1 more

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View details of Sublime Security's funding rounds and investors

The founders of Sublime Security are Josh Kamdjou and Ian Thiel. Josh Kamdjou is the CEO of Sublime Security.

Here are the details of Sublime Security's key team members:

Josh Kamdjou: Co-Founder & CEO of Sublime Security. They are also an angel investor in 1 startup.
Contact Info: 1 email address
Ian Thiel: Co-Founder & COO of Sublime Security.
Contact Info: 1 email address

View details of Sublime Security's Founder profiles and Board Members

Sublime Security's employee count trend

Sublime Security has 310 employees as of Jun 26. Here is Sublime Security's employee count trend over the years:

Employee count trend for Sublime Security

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Top competitors of Sublime Security include Halon and Secure Mail Auth. Here is the list of Top 10 competitors of Sublime Security, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Sublime Security 2017, Washington, DC (United States), Series C	Offering anti phishing email security solution	$240M	Georgian, Index Ventures & 16 others	59/100
2nd	Halon 2002, Gothenburg (Sweden), Acquired	Provider of composable email infrastructure and email security solutions	-	Almi Invest, Chalmers Innovation & 1 others	53/100
3rd	Secure Mail Auth San Francisco (United States), Unfunded	Provider of secure email routing services for transactional authentication messages	-	-	16/100