Correction and Conclusion of Single Sale/Supply Contract (KRW 31.22B, 12.1% of Revenue)

Contract amount reduced from KRW 31.52B to KRW 31.22B (-0.3%) due to project scope changes
Signed IT system maintenance service contract with the Public Procurement Service (2025~2026)
Contract amount: KRW 31,220,946,415 (excl. VAT), representing 12.1% of latest annual revenue
Company's 28% share of joint contract total of KRW 111.5B among 5 companies
Contract period: 2025.03.31 ~ 2026.12.31 (approx. 21 months), negotiated contract
Payment to be settled pro-rata based on actual service provision dates

Filing: [Correction of Description] Conclusion of Single Sale and Supply Contract
Company: Daishin Information & Communication (020180)
Submission: Daishin Information & Communication
Receipt: 05-04-2026
Under KRX KOSDAQ Market Division