How many employees work at SISL?
SISL Inc has 501 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -0.2%.
Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025
About SISL
SISL Inc, also known as GLB Fire Protection, is a Canada-based company that specializes in the design, manufacturing, installation, and inspection of fire protection systems. The company offers a comprehensive service to their clients, providing engineering, design, and installation skills for various types of sprinkler and fire alarm systems. GLB Fire is a licensed distributor of Fireaway products, including Stat X First Responder 500, and is a leader in the field of fire protection. The company's mission is to provide high-performance fire protection solutions to industrial, commercial, and institutional clients, with a focus on addressing complex and adaptable fire protection issues.
As of December 2025
SISL
workforce metrics
Headcount
501
Avg. Salary
$25.9k
Tenure
4.1yr
Growth Rate
-0.2%
Hiring Rate
Attrition Rate
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Employee Headcount
Interactive chart of SISL annual worldwide employee count from 2023 to 2025.
- SISL total number of employees in 2025 was 501, a 0.2% decline from 2024.
- SISL total number of employees in 2024 was 501, a 0.8% decline from 2023.
- SISL total number of employees in 2023 was 505, a 0.5% increase from 2022.
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Employee Geographic Breakdown
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Active Job Postings
Interactive chart of SISL annual active job postings from 2023 to 2025.
- SISL active job postings in 2025 was 0, a 0% no change from 2024.
- SISL active job postings in 2024 was 0, a 0% no change from 2023.
- SISL active job postings in 2023 was 0, a 0% no change from 2022.
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Employee Sentiment
Sentiment Topics
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