CompStak®
CompStak is a commercial real estate data platform that provides lease, sale, and loan comps to investors and lenders. It has raised $81M, most recently in a Series C round in 2021, and employs 129 people.
The growth story
CompStak® grew from 95 to 129 employees between 2021 and 2026, raising $81M along the way, most recently a Series C in November 2021.
About
CompStak sells verified commercial real estate data, including lease comps, sale comps, and loan data, to investors, lenders, and advisors. Its customers include Wells Fargo, Tishman Speyer, and Moody's.
The company has raised $81M, including a Series C round in 2021. It employs 129 people, with engineering being its largest function at 21 staff.
Founders and leadership
Engineering is CompStak's largest function, with 21 staff. The company is led by a team that includes investors from firms like Canaan Partners and 500 Global.
The CompStak® org chart
Michael Mandel (Co-Founder & CEO) leads 46 mapped leaders with 17 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 25 (-7% YoY), Sales 20 (0% YoY), Research 16 (0% YoY), Business Development 9 (-25% YoY), Administrative 9 (0% YoY), Information Technology 8 (-20% YoY).
Talent flow
CompStak's talent comes from companies like EPAM and Polus Tech, with the University of Belgrade being its top alma mater. Alumni often move to JPMorgan Chase and Meta.
Most common previous employers of CompStak® staff: EPAM (3), Polus Tech (3), Vox Code (2), SBB Serbia BroadBand (2), Hyperoptic (2), Sitel (2). Former CompStak® employees most often moved to JPMorganChase (5), Meta (3), CRED iQ® (2), Salesforce (2), Dealpath (2), Gridium (2).
Alumni worth knowing
The CompStak® mafia
CompStak alumni have founded 13 companies, including Recura AI, Venture Commercial, and box-to-box.
13Harrison Cuker, was Enterprise Sales until 2021Arash S., was Enterprise Sales until 2014Nuno Pinge, was Senior Software Engineer and CodeSmith until 2015Sara Shank, was Advisory Board Member until 2020Daniel Santiago, was Director, Enterprise Sales until 2021
Abhijit Gupta, was Director - Enterprise until 2020
Jessica Murray, was Business Development until 2015
Victoria Kennedy, was Product until 2020
Andrew Phillips, was Head Of Sales until 2015
Juliana Mandel Gabay, was Data Analyst Intern until 2017
Trajah Buxton, was Commercial Real Estate Research until 2014
Terry Talerman, was VP Finance until 2020Web traffic
Traffic mix: 21% direct, 68% search, 0% social, 0% paid.
What this company is made of
Most common skills at CompStak®: Microsoft Office (42), Microsoft Excel (39), Data Analysis (31), Leadership (27), Communication (27), Research Skills (27), Management (25), Customer Service (25).
Where the team actually sits
CompStak® people are concentrated in New York, United States (28), Belgrade, Serbia (20), New York City Metropolitan Area (12), Serbia (12). 4 offices on record.
Search footprint
CompStak® attracts about 21,070 organic search visits a month, traffic worth roughly $97K a month if bought through ads. It gained 8,814 ranking keywords and lost 6,790 in the last period.
Frequently asked
CompStak® has 129 employees as of September 2026.
CompStak® has raised $81M in total, most recently a Series C round in November 2021.
CompStak® was founded in 2011 by Michael Mandel.
Michael Mandel (Co-Founder & CEO) sits at the top of CompStak®'s reporting structure, with 17 direct reports.
The most common previous employers of current CompStak® staff are EPAM (3 people), Polus Tech (3 people), Vox Code (2 people).
Former CompStak® employees most often move to JPMorganChase (5), Meta (3), CRED iQ® (2).
At least 13 companies have a founder who previously worked at CompStak®, including Recura AI, Venture Commercial, box-to-box.
CompStak® attracts about 21,070 organic search visits a month, worth roughly $97K a month in equivalent ad spend.
The most common skills among CompStak® staff are Microsoft Office, Microsoft Excel, Data Analysis, Leadership, Communication.
CompStak® staff are concentrated in New York, United States (28), Belgrade, Serbia (20), New York City Metropolitan Area (12).
CompStak® has about 25 people in Engineering, down 7% over the past year, as of September 2026.
CompStak® has about 20 people in Sales, up 0% over the past year, as of September 2026.
Computed from 101 current and 255 former CompStak® profiles, as of September 2026. Source: Crustdata.
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