About S1
S1 is a company based in South Korea founded in 1977. The company has 6,960 employees. S1 offers products and services including CCTV Surveillance and Building Management.
- Annual Revenue$2 B (USD)3.02as on Dec 31, 2025
- Net Profit$123.65 M (USD)1.04as on Dec 31, 2025
- EBITDA$282.85 M (USD)6.94as on Dec 31, 2025
- Employee Count6,960
Products & Services of S1
S1 offers a comprehensive portfolio of products and services, including CCTV Surveillance and Building Management.
CCTV systems are utilized for monitoring and securing properties in various settings
Building management services are employed to handle asset and facility maintenance for improved operational standards
Apps and channels of S1
its YouTube channel 어서와 에스원 has 53.5K subscribers and 30 videos.
Videos from S1
The most watched videos on S1's YouTube channel, 어서와 에스원 (53.5K subscribers). Click a video to play it here.
More on 어서와 에스원.
People of S1
4 people are tracked at S1 (2 in leadership, 2 in team); the tracked headcount is 6,960.
| Name | Role | Group |
|---|---|---|
Yook Hyun-Pyo | CEO | Leadership |
Namgoong Beom | CEO | Leadership |
Kwangho Park | Research Manager | Team |
Jihoon Lee | Architectural Structure Data Analyst | Team |
Complete people profiles for S1
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
- Full employee list
- Team structure
- Board tenure
- Professional contacts
Verified entity values are shown only after access is granted.
IPO & Listings of S1
S1 is a publicly listed company on the KRX with ticker symbol 012750 in South Korea, operating in the Commercial services sector. As a publicly traded entity, the company provides investors with opportunities to participate in its growth story through equity ownership. The listing enables access to capital markets, enhances corporate visibility, and provides liquidity for shareholders while maintaining transparency through regulatory compliance and regular financial disclosures.
- IPO date30 Jan 1996
- Listed onKRX: 12750
- Listed entityS-1 Corporation
- Exchange sectorCommercial services
- ISINKR7012750006
- Share price84,200.00 KRW (+0.48% on the day) · 2026-10-08
- Market capitalisation2,846,822,029,877.00 KRW
- Price to earnings18.6
- EPS (diluted, trailing year)4,517.54 KRW
- Dividend yield3.8%
- Volume (last session)60,758
Financials of S1
| Year | Revenue | Net income | EBITDA |
|---|---|---|---|
| 2025 | 2,890.00B KRW | 178.57B KRW | 408.50B KRW |
| 2024 | 2,800.00B KRW | 176.73B KRW | 382.00B KRW |
| 2023 | 2,620.00B KRW | 189.48B KRW | 387.16B KRW |
| 2022 | 2,470.00B KRW | 151.03B KRW | 375.30B KRW |
| 2021 | 2,310.00B KRW | 128.99B KRW | 348.73B KRW |
Detailed financial statements for S1
Statement rows, ratios, five-year trends and downloadable financials of the group companies require an active premium plan.
- Statement rows
- Financial ratios
- Five-year trends
- Downloads
Verified entity values are shown only after access is granted.
Web traffic of S1
The website of S1 (s1.co.kr) receives about 349.1K visits a month.
- Monthly visits349.1K
▲ 19.5% vs previous month
Websites whose visitors overlap most with S1. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| clien.net | 100% | – | #1,178 | View details | |
ppomppu.co.kr | ppomppu.co.kr | 95% | – | #682 | – |
| notion.so | 93% | 178.3M | #160 | View details | |
s1mobilecard.co.kr | s1mobilecard.co.kr | 88% | – | #713,604 | – |
| lguplus.com | 83% | 16M | #3,413 | View details | |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 40 similar websites and full traffic analytics for S1
The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.
- 40 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
Verified entity values are shown only after access is granted.
Latest news on S1
Complete news archive for S1
Full article history, source details, and older brand coverage require an active premium plan.
- Full article archive
- Source and publication date
- Older coverage
- Brand-specific news history
Verified entity values are shown only after access is granted.
Similar companies to S1
10 companies that operate in the same segment as S1 (Physical Security Services), ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Smart security solutions are provided by Verisure for property protection. | 1988 | Versoix, Geneve, Switzerland | – | USD 4.41 B | – | |
Security and management services are provided to enterprises. | 2016 | United States | USD 600 M | – | – | |
Kiwa is engaged in testing, inspection, and certification services. | 1948 | Rijswijk, South Holland, Netherlands | – | – | – | |
Security camera and AI-based sensor technology services are provided. | 2015 | Philadelphia, Pennsylvania, United States | – | USD 1.54 M | 49 | |
Provider of IoT, network surveillance, data center, and other services | 2001 | Delhi, Delhi, India | USD 8.36 M | USD 5.25 M | – | |
Cables and marine seismic products are manufactured for various applications. | 1980 | Houston, Texas, United States | – | USD 110.8 M | 478 | |
Security locks are provided by London Security for protection needs. | 1897 | Elland, England, United Kingdom | – | USD 328.96 M | – | |
Provides physical security, surveillance and disaster prevention for business and home | 1962 | Shibuya, Tokyo, Japan | – | USD 7.9 B | 64,660 | |
Developer of RF sensing technology for airspace monitoring and threat detection | 2018 | Syracuse, New York, United States | USD 226.46 M | – | – | |
Provider of fire safety, intruder alarms, CCTV & other security system designing and training services | 1818 | Ashford, United Kingdom | USD 194.71 K | USD 8.62 B | – |
Unlock complete access to The Company Check
Get unrestricted viewing across everything we track — from companies and brands to investors, funding rounds, acquisitions, financials, and more.
- Unlimited viewing on all profiles Companies, investors, financials, funding, acquisitions & directors
- Full access to every database India & global coverage, advanced filters and rich profile details
- Always-on access from your team account Single premium plan for everything you see on the portal
Frequently Asked Questions about S1
S1 was founded in 1977.
S1 is headquartered in South Korea.
Yook Hyun-Pyo is the current CEO of S1.
S1 has 6,960 employees.
Annual revenue of S1 is $2B as on Dec 31, 2025.
S1 was founded in 1977 and operates within the security sector in South Korea. Home security solutions are offered, including monitoring and protection systems for residential properties. The company maintains its headquarters in South Korea, with services focused on local markets. Leadership is provided by CEO Yook Hyun-Pyo, overseeing daily operations and strategic direction in the industry.
S1 offers CCTV Surveillance and Building Management.
Yes, S1 is publicly traded on KRX under the ticker symbol 012750.
S1 operates through S-1 Corporation.
The website of S1 receives about 349 thousand visits a month.