Corelight
Corelight sells network detection and response software that converts network data into security evidence. The San Francisco-based cybersecurity firm has raised $309 million, most recently in a Series E round in April 2024, and employs 484 people.
The growth story
Corelight grew from 219 to 484 employees between 2021 and 2026, raising $309M along the way, most recently a Series E in April 2024.
About
Corelight provides network security software that analyzes network traffic to detect threats and generate evidence for investigations. Its sensors work both on-premises and in the cloud, integrating with existing security tools. Customers include Fortune 500 companies, government agencies, and universities.
The company has raised $309 million across multiple funding rounds, with its latest Series E closing in April 2024. Investors include Accel, Cisco Investments, and CrowdStrike Falcon Fund. With 484 employees, Corelight has built a substantial workforce in the cybersecurity space.
Founders and leadership
Engineering is Corelight's largest function with 121 employees, representing about a quarter of its total workforce. The company's leadership team spans cybersecurity veterans, with median employee tenure at 2 years.
The Corelight org chart
Brian Dye (Chief Executive Officer) leads 60 mapped leaders with 13 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Sales 146 (+18% YoY), Engineering 110 (+1% YoY), Information Technology 67 (+37% YoY), Marketing 21 (+11% YoY), Business Development 19 (+27% YoY), Product Management 16 (+33% YoY).
Talent flow
Corelight recruits heavily from established cybersecurity firms, with Riverbed Technology, Palo Alto Networks, and Cisco being its top talent sources. Alumni frequently move to other security companies like ExtraHop, CrowdStrike, and Fortinet. Many employees hold degrees from Western Governors University and Ohio State.
Most common previous employers of Corelight staff: Riverbed Technology (26), Palo Alto Networks (24), Cisco (22), Dell Technologies (17), Splunk (14), Symantec (13). Former Corelight employees most often moved to ExtraHop (6), CrowdStrike (6), Fortinet (4), SentinelOne (4), Cloudflare (3), Gigamon (3).
Alumni worth knowing
The Corelight mafia
Corelight alumni have founded 10 companies, including Axonius (713 employees), CodeUpNow (34 employees), and Sapien (24 employees). These startups span cybersecurity and data analytics sectors.
10Sally Massad, was Manager of Facilities, Operations, Administration, and Workplaces until 2020Ibrar Ul Haq, was Sr. DevOps Engineer/ Team Lead until 2022Pranav Ravella, was AI & Cybersecurity Intern until 2023Achim K., was Sales Engineering until 2021Vamsi Korrapati, was Senior Director Of Engineering until 2025Grace C., was Research Intern until 2025
Shayne McAllister, was Information Technology Lead until 2025
Charles Strauss, was Sr. Brand Copywriter until 2023Hiring now
Web traffic
Traffic mix: 38% direct, 47% search, 3% social, 1% paid.
What this company is made of
Most common skills at Corelight: Cloud Computing (164), Security (160), Leadership (155), Network Security (155), Management (142), Cybersecurity (140), Networking (128), Software as a Service (SaaS) (128).
Where the team actually sits
Corelight people are concentrated in California, United States (62), United States (23), San Francisco Bay Area (22), Texas, United States (19).
Search footprint
Corelight attracts about 5,237 organic search visits a month, traffic worth roughly $63K a month if bought through ads. It gained 1,133 ranking keywords and lost 591 in the last period.
What employees say
- Compensation
- 4.50 / 5
- Career opportunities
- 4.00 / 5
- Senior management
- 3.70 / 5
- Work-life balance
- 4.10 / 5
Frequently asked
Corelight has 484 employees as of September 2026.
Corelight has raised $309M in total, most recently a Series E round in April 2024.
Corelight was founded in 2016 by Gregory Bell.
Brian Dye (Chief Executive Officer) sits at the top of Corelight's reporting structure, with 13 direct reports.
The most common previous employers of current Corelight staff are Riverbed Technology (26 people), Palo Alto Networks (24 people), Cisco (22 people).
Former Corelight employees most often move to ExtraHop (6), CrowdStrike (6), Fortinet (4).
At least 10 companies have a founder who previously worked at Corelight, including Axonius, CodeUpNow, Sapien.
Corelight attracts about 5,237 organic search visits a month, worth roughly $63K a month in equivalent ad spend.
The most common skills among Corelight staff are Cloud Computing, Security, Leadership, Network Security, Management.
Corelight staff are concentrated in California, United States (62), United States (23), San Francisco Bay Area (22).
Corelight has about 146 people in Sales, up 18% over the past year, as of September 2026.
Corelight has about 110 people in Engineering, up 1% over the past year, as of September 2026.
Computed from 418 current and 302 former Corelight profiles, as of September 2026. Source: Crustdata.
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