Treasury share disposal: results report

What happened

Treasury Share Disposal: Results Report 6.2 Seegene Inc.

To the Governor of the Financial Supervisory Service August 21, 2026

Company name: Seegene Inc. Representative Directors: Chun Jong-yoon, Lee Dae-hoon Head office address: 91 Ogeum-ro (Bangi-dong, Taewon Building), Songpa-gu, Seoul (Phone) 02-2240-4000 (Website) https://kr.seegene.com Preparer: (Title) Managing Director (Name) Kwon Young-jae (Phone) 02-2240-4000

1. Name and address of the issuer a. Name: Seegene Inc. b. Address: 91 Ogeum-ro (Bangi-dong, Taewon Building), Songpa-gu, Seoul

2. Matters concerning the disposal report a. Filing date of the material event report: August 12, 2026 b. Disposal period: August 13, 2026 to September 11, 2026 c. Class and number of shares subject to the disposal report: common shares, 183 shares

3. Disposal details (unit: KRW, shares) 2026.08.13: common shares, order -; disposed 183; price per share 31,636; total disposal value 5,789,388; brokerage -; financial investment business ID - Total: disposed 183; price per share 31,636; total disposal value 5,789,388 * The price per share is the acquisition cost under the moving-average method. * The disposal method was an internal transfer from the Company's treasury share account to the recipient's securities account.

4. Whether the disposal report and the actual disposal match Planned shares to be disposed (shares): common shares 183; other shares - Total shares disposed (shares): common shares 183; other shares - Match: Matched Reason if a difference occurred: -

5. Treasury share holdings after disposal (as of August 21, 2026) (unit: KRW, shares, %) Holdings under Article 165-3 (A): common shares 6,661,500 shares, 12.76%, total value KRW 210,744,671,381 Holdings under trust contracts per Article 165-3 (B): - Total (A+B): common shares 6,661,500 shares, 12.76%, KRW 210,744,671,381 * "Total value" above is the treasury share acquisition cost excluding fees. * The quantity under (A) above is physical holdings acquired after the trust contract expired. * The total value under (A) above is net of the disposal proceeds (quantity × price per share) described in "3. Disposal details."