Treasury share acquisition: results report

What happened

Treasury share acquisition: results report To the Governor of the Financial Supervisory Service September 29, 2026 Company name: Inzisoft Co., Ltd. CEO: Jung Jeong-gi Head office address: 16th floor, 131 Teheran-ro, Gangnam-gu, Seoul (Yeoksam-dong, Korea Intellectual Property Center) (Phone) 02-523-4151 (Website) http://www.inzisoft.com Preparer: (Title) Managing Director (Name) Kim Ki-hong (Phone) 02-523-4151

1. Name and address of the issuer a. Name: Inzisoft Co., Ltd. b. Address: 16th floor, 131 Teheran-ro, Gangnam-gu, Seoul (Yeoksam-dong, Korea Intellectual Property Center)

2. Matters concerning the acquisition report a. Material event report filing date: August 3, 2026 b. Acquisition period: August 4, 2026 to September 29, 2026

3. Acquisition details (Unit: KRW, shares) Daily acquisition records from August 4, 2026 through September 29, 2026, all executed via Eugene Investment & Securities (financial investment business registration no. 00131054), with order quantity, actual quantity acquired, average price per share, and total value as follows: 2026-08-04: ordered 5,000; acquired 5,000; price 18,361; total 91,805,000 2026-08-05: ordered 5,000; acquired 13; price 18,490; total 240,370 2026-08-06: ordered 5,000; acquired 2,547; price 18,899; total 48,136,890 2026-08-07: ordered 5,000; acquired 5,000; price 19,277; total 96,387,880 2026-08-10: ordered 5,000; acquired 5,000; price 19,544; total 97,720,000 2026-08-11: ordered 5,000; acquired 1,539; price 19,390; total 29,841,210 2026-08-12: ordered 5,000; acquired 2,720; price 19,563; total 53,213,600 2026-08-13: ordered 5,000; acquired 5,000; price 19,883; total 99,415,000 2026-08-14: ordered 5,000; acquired 5,000; price 19,744; total 98,721,530 2026-08-18: ordered 5,000; acquired 5,000; price 20,185; total 100,928,300 2026-08-19: ordered 5,000; acquired 2,487; price 19,230; total 47,826,050 2026-08-20: ordered 5,000; acquired 2,114; price 19,808; total 41,875,710 2026-08-21: ordered 5,000; acquired 4,168; price 19,903; total 82,958,000 2026-08-24: ordered 5,000; acquired 5,000; price 19,990; total 99,952,310 2026-08-25: ordered 5,000; acquired 4,661; price 19,997; total 93,210,310 2026-08-26: ordered 5,000; acquired 3,663; price 20,207; total 74,020,600 2026-08-27: ordered 5,000; acquired 2,278; price 20,547; total 46,807,600 2026-08-28: ordered 5,000; acquired 3,000; price 20,550; total 61,650,000 2026-08-31: ordered 5,000; acquired 5,000; price 20,390; total 101,950,000 2026-09-01: ordered 5,000; acquired 3,242; price 20,604; total 66,798,900 2026-09-02: ordered 5,000; acquired 5,000; price 20,400; total 102,000,000 2026-09-03: ordered 5,000; acquired 5,000; price 20,024; total 100,120,000 2026-09-04: ordered 5,000; acquired 5,000; price 20,128; total 100,640,500 2026-09-07: ordered 5,000; acquired 5,000; price 20,050; total 100,250,000 2026-09-08: ordered 5,000; acquired 5,000; price 19,984; total 99,920,000 2026-09-09: ordered 5,000; acquired 1,345; price 19,825; total 26,665,850 2026-09-10: ordered 5,000; acquired 792; price 20,195; total 15,995,000 2026-09-11: ordered 5,000; acquired 0; price 0; total 0 2026-09-14: ordered 5,000; acquired 4,832; price 20,191; total 97,564,800 2026-09-15: ordered 5,000; acquired 0; price 0; total 0 2026-09-16: ordered 5,000; acquired 5,000; price 20,220; total 101,100,000 2026-09-17: ordered 5,000; acquired 3,138; price 20,179; total 63,323,800 2026-09-18: ordered 5,000; acquired 5,000; price 20,130; total 100,650,000 2026-09-21: ordered 5,000; acquired 677; price 19,960; total 13,512,920 2026-09-22: ordered 5,000; acquired 5,000; price 20,100; total 100,500,000 2026-09-23: ordered 2,000; acquired 2,000; price 19,730; total 39,461,280 2026-09-28: ordered 240; acquired 223; price 19,850; total 4,426,550 2026-09-29: ordered 20; acquired 20; price 20,247; total 404,950 Total: ordered 177,260; acquired 125,459; average price 19,927; total value 2,499,994,910 Notes: "Date" is the trade date; the price per share is the average acquisition unit price; the per-share price and total value exclude brokerage fees.

4. Whether the acquisition report matches the actual acquisition - Expected acquisition amount (KRW): common shares 2,500,000,000; other class shares - - Total acquisition value (KRW): common shares 2,499,994,910; other class shares - - Whether the expected amount was not reached, and reason if so: - The Company acquired treasury shares as close as possible to the expected acquisition amount stated in the material event report. The difference between the expected acquisition amount and the total acquisition value for common shares is less than the price of one share.

5. Holding status of treasury shares, etc. after acquisition [As of September 29, 2026] (Unit: KRW, shares, %) Common shares - holdings under Article 165-3 (A): quantity 916,304; ratio 27.90%; total value KRW 13,271,522,952; holdings under a trust agreement, etc. (B): -; total (A+B): quantity 916,304; ratio 27.90%; amount KRW 13,271,522,952 Total row: same as above The above ratio is of the treasury shares to the 3,283,714 total shares issued. The "total value" and "amount" above are book-value figures including brokerage fees.

6. Changes in the largest shareholder's shareholding before and after the acquisition [As of September 29, 2026] (Unit: shares) Jung Jeong-gi: common shares - acquisition report date holding 1,170,876; acquisition end date holding 1,170,876; reason for change - Total: common shares 1,170,876 / 1,170,876; other class shares -; grand total 1,170,876 / 1,170,876