Subcontractor Payment Methods, Payment Periods, and Dispute Resolution Disclosure (H1 2026) — ISC

Summary

ISC disclosed its subcontractor payment practices for H1 2026 (January–June) as required under Article 13-3 of the Subcontracting Act. The company made all subcontractor payments entirely in cash or cash equivalents, totaling approximately KRW 36.49 billion, with a cash payment ratio of 100%. The majority of payments (73.89%) were made within 30–60 days, while no payments exceeded the 60-day threshold. The company has not established an internal dispute resolution body for subcontractor disputes.

Filed	P₀	P₊₅	+5d
Feb 12, 2026	₩175,600	₩182,500	+3.93%
Aug 14, 2025	₩64,400	₩57,300	-11.02%

Filed

P₀

P₊₅

+5d

Feb 12, 2026

₩175,600

₩182,500

+3.93%

Aug 14, 2025

₩64,400

₩57,300

-11.02%

Full Translation

Payment Amounts by Payment Method and Payment Period, and Matters Concerning Dispute Resolution Mechanisms Corporate Group: SK Company Name: ISC Co., Ltd. Disclosure Date: 2026.08.14 Disclosure Period: 2026.01.01 ~ 2026.06.30 Relevant Law: Subcontracting Act, Article 13-3 1. (Item 1) Payment Amounts by Payment Method [Unit: KRW thousand; Share: %, rounded to two decimal places] Categories: Cash & Checks | Mutual Growth Payment | Bill-Substitute Payment Instruments | Bills | Other | Total - Cash & Checks: KRW 36,490,306 thousand (100.00%) - Mutual Growth Payment (maturity ≤10 days / 10–60 days / >60 days / subtotal): all — - Bill-Substitute Payment (maturity ≤1 day / 1–60 days / >60 days / subtotal): all — - Bills (maturity ≤60 days / >60 days / subtotal): all — - Other: — - Total: KRW 36,490,306 thousand (100.00%) Cash Payment Ratio: 100.00% Cash-Equivalent Payment Ratio: 100.00% Remarks: — 2. (Item 2) Payment Amounts by Payment Period [Unit: KRW thousand; Share: %, rounded to two decimal places] | Period | Amount (KRW thousand) | Share (%) | |---|---|---| | Within 10 days | 1,574,075 | 4.31 | | 10–15 days | 351,786 | 0.96 | | 15–30 days | 7,605,782 | 20.84 | | 30–60 days | 26,958,663 | 73.89 | | Over 60 days | — | 0.00 | Remarks: — 3. (Item 3) Matters Concerning Dispute Resolution Mechanisms | Item | Details | |---|---| | Dispute Resolution Body Established | No (X) | | Responsible Department & Contact | — | | Dispute Resolution Application Process & Method | — | | Estimated Time for Dispute Resolution | — | | Remarks | — |