Fundraising Fox
Expel
Mclean, US · Founded 2016 · 476 employees on LinkedIn · 12 known investors
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Expel provides managed detection and response (MDR) services for cybersecurity threats, helping organizations detect and respond to security incidents. The company serves enterprise customers seeking external security expertise and incident response capabilities.
Founders & leadership
Expel was founded in 2016 by Yanek Korff and Justin Bajko.
YK
Yanek KorffCo-Founder & Chief Operating OfficerHe has held security operations and infrastructure management roles, with experience spanning threat detection, security operations, and business leadership through economic cycles and growth phases.
JB
Justin BajkoCo-Founder & Chief Strategy OfficerBefore co-founding Expel in 2016, Bajko was managing director of MCIRT operations at Mandiant and spent six years at Symantec as a senior manager in global security analysis. He began his career in network and systems administration at MiniFibers and Clinical Trial Management Services.
DM
Dave MerkelCo-founder & Chief Executive OfficerMerkel previously served as chief technology officer at FireEye and at Mandiant, where he also led products and threat management services, and spent eight years at America Online in technical security and operations security investigations roles. He co-founded Expel in 2016.
Board
MY
Investors · 12
Battery Ventureslisted by Battery VenturesBoston · $500K – $100M
How we know: Battery Ventures's portfolio page · a partner's Signal profile · funding news · Not right? Tell us
Burda Principal Investmentslisted by Burda Principal InvestmentsMunich
How we know: Burda Principal Investments's portfolio page · Not right? Tell us
CapitalGlisted by CapitalGSan Francisco · $75M – $100M
How we know: CapitalG's portfolio page · a partner's Signal profile · funding news · expel.com · Not right? Tell us
Cisco Investmentslisted by Cisco InvestmentsSan Jose
How we know: Cisco Investments's portfolio page · expel.com · Not right? Tell us
Greycroftlisted by GreycroftNew York · $100K – $5M
How we know: Greycroft's portfolio page · funding news · expel.com · the VCSheet dataset · Not right? Tell us
Index Ventureslisted by Index VenturesSan Francisco · $540K – $10.8M
How we know: Index Ventures's portfolio page · expel.com · Not right? Tell us
Lightbanklisted by LightbankChicago · $500K – $5M
How we know: Lightbank's portfolio page · funding news · Not right? Tell us
March Capital Partnerslisted by March Capital PartnersSanta Monica
How we know: March Capital Partners's portfolio page · a partner's Signal profile · the VCSheet dataset · Not right? Tell us
Paladin Capital Grouplisted by Paladin Capital GroupWashington · $100K – $5M
How we know: board seat on SEC Form D · expel.com · the VCSheet dataset · Not right? Tell us
Scale Venture Partnerslisted by Scale Venture PartnersFoster City · $5M – $50M
How we know: Scale Venture Partners's portfolio page · a partner's Signal profile · funding news · expel.com · Not right? Tell us
Also in the syndicate · 1
March Capital
Reported raises · per SEC filings
Form D private placements$284.6M disclosed across 6 rounds · 2016–2022
▶$30MraisedNov 2022 · 10 investors · Other TechnologyRule 506(b)
▶$30MraisedNov 2022 · 10 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Ariel TseitlinDirector
- David MerkelExecutive Officer, Director
- Peter KatzExecutive Officer
- Shardul ShahDirector
- Yanek KorffExecutive Officer, Director
- Gene FrantzDirector
- Johanna FlowerDirector
- Mourad YesayanDirector
- Offering amount
- $30M
- Amount sold
- $30M
- First sale
- Sep 2022
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$141.3MraisedFeb 2022 · 10 investors · Other TechnologyRule 506(b)
▶$141.3MraisedFeb 2022 · 10 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Ariel TseitlinDirector
- Peter KatzExecutive Officer
- Shardul ShahDirector
- Johanna FlowerDirector
- Mourad YesayanDirector
- David MerkelExecutive Officer, Director
- Yanek KorffExecutive Officer, Director
- Gene FrantzDirector
- Offering amount
- $141.3M
- Amount sold
- $141.3M
- First sale
- Sep 2021
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$45.8MraisedMay 2020 · 9 investors · Other TechnologyRule 506(b)
▶$45.8MraisedMay 2020 · 9 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Peter KatzExecutive Officer
- Gene FrantzDirector
- David MerkelExecutive Officer, Director
- Ariel TseitlinDirector
- Mourad YesayanDirector
- Yanek KorffExecutive Officer, Director
- Shardul ShahDirector
- Offering amount
- $50M
- Amount sold
- $45.8M
- First sale
- May 2020
- Incorporated
- Corporation, Delaware, 2016
- Federal exemptions
- 06b
▶$40MraisedJul 2019 · 11 investors · OtherRule 506(b)
▶$40MraisedJul 2019 · 11 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Dave MerkelExecutive Officer, Director
- Yanek KorffExecutive Officer, Director
- Justin BajkoExecutive Officer
- Mourad YesayanDirector
- Ariel TseitlinDirector
- Shardul ShahDirector
- Offering amount
- $40M
- Amount sold
- $40M
- First sale
- Jun 2019
- Incorporated
- Corporation, Delaware, 2016
- Federal exemptions
- 06b
▶$20MraisedApr 2018 · 10 investors · OtherRule 506(b)
▶$20MraisedApr 2018 · 10 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Justin BajkoExecutive Officer
- Ariel TseitlinDirector
- Yanek KorffExecutive Officer, Director
- Mourad YesayanDirector
- David MerkelExecutive Officer, Director
- Offering amount
- $20M
- Amount sold
- $20M
- First sale
- Mar 2018
- Incorporated
- Corporation, Delaware, 2016
- Federal exemptions
- 06b
▶$7.5MraisedSep 2016 · 15 investors · OtherRule 506(b)
▶$7.5MraisedSep 2016 · 15 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Yanek KorffExecutive Officer, Director
- David MerkelExecutive Officer, Director
- Justin BajkoExecutive Officer, Director
- Mourad YesayanDirector
- Offering amount
- $7.5M
- Amount sold
- $7.5M
- Proceeds to insiders
- $500K
- First sale
- Aug 2016
- Incorporated
- Corporation, Delaware, 2016
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
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Trend MicroTrendAI (Trend Micro) provides enterprise cybersecurity through its TrendAI Vision One platform, which unifies endpoint, network, cloud, and identity security with XDR visibility, threat intelligence, and AI-focused threat protection. It serves enterprise customers across 185 countries, including hybrid cloud, virtualized data center, and modern SOC environments.
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Companies working in the same space as Expel.
In the news
Frequently asked questions
- What does Expel do?
- Expel provides managed detection and response (MDR) services for cybersecurity threats, helping organizations detect and respond to security incidents. The company serves enterprise customers seeking external security expertise and incident response capabilities.
- Who founded Expel?
- Expel was founded by Yanek Korff, Justin Bajko in 2016.
- Who are Expel's investors?
- Expel's investors include Battery Ventures, Burda Principal Investments, CapitalG, Cisco Investments, Greycroft, Index Ventures, Lightbank, March Capital Partners and 3 more.
- How much funding has Expel raised?
- Expel has disclosed $284.6M raised across 6 rounds.
- Where is Expel headquartered?
- Expel is headquartered in Mclean, US.