2024년

* Report Items

• (Note1) Independent Director Ahn Yang-ho's term expired upon the conclusion of the 7th Annual General Meeting of Shareholders held on March 26, 2024.
• (Note2) Independent Director Kim Sunmee Choi was appointed at the 7th Annual General Meeting of Shareholders held on March 26, 2024.
• (Note3) This agenda item relates to the approval of a self-dealing transaction. Please refer to the details provided below.

  Target Company	Major Shareholder	Resolution Date	Approval Details
  SK Plasma Co.,Ltd.	SK Discovery Co.,Ltd.	2024.05.22	1. Amendment to Building Lease Agreement Amendment to existing lease agreement with SK Plasma Change in Eco Lab office location and expanded area: 3rd floor, total area approx. 1,685㎡ (Increase of approx. 545㎡) Upfront construction cost reflected in rent (615M KRW incl. interest), repaid over 5 years
  SK Discovery Co.,Ltd.	Changwon Choi	2024.05.22	1. Amendments to Committee and DX Lab Operating Agreements with SK Discovery Approval of changes to the agreement and contracting parties due to modifications in the participating entities of the Committee and DX Lab agreements, including the addition of SK Eternix newly established through the spin-off of SK D&D. Effective date: June 1, 2024 Expected cost share: Committee 330M KRW, DX Lab 1.27B KRW
  SK Gas Co.,Ltd.	SK Discovery Co.,Ltd.	2024.06.26	1. Transaction with SK Gas (Consulting Service Agreement) Purpose/Scope: Consulting for domestic/global market analysis of SKYBON/SKYPEL business and deriving strategic direction Contract period: July 1, 2024 - Sept 6, 2023 (approx. 10 weeks) Service fee: approx. 266M KRW
  SK Plasma Co.,Ltd.	SK Discovery Co.,Ltd.	2024.08.28	1. Amendment to Development Service Agreement with SK Plasma Partial scope change to generic product development service agreement signed in March 2022
  SK Plasma Co.,Ltd.	SK Discovery Co.,Ltd.	2024.12.10	1. Manufacturing Consignment Agreement with SK Plasma Purpose/Scope: Contract for manufacturing and consignment of generic pharmaceuticals Contract period: 10years from signing date

* This includes the agenda items deliberated by the Board of Directors from the start of the fiscal year through the reference date applicable to the preparation of this disclosure document.

2023년

* Report Items

• (Note 1) Kim Cheol, an internal director, was reappointed at the 6th Regular Shareholders' Meeting held on March 28, 2023.
• (Note 2) Ahn Jae-hyun, an internal director, was newly appointed at the 6th Regular Shareholders' Meeting held on March 28, 2023.
• (Note 3) Moon Sung-hwan, an independent director, was reappointed at the 6th Regular Shareholders' Meeting held on March 28, 2023.
• (Note 4) Jo Hong-hee, an independent director, was reappointed at the 6th Regular Shareholders' Meeting held on March 28, 2023.
• (Note 5) Jeon Kwang-hyun, an other non-executive director, was newly appointed at the 6th Regular Shareholders' Meeting held on March 28, 2023.
• (Note 6) This matter is related to the approval of self-dealing. For detailed information, please refer to the following.

  자기거래의 승인대상 주요주주, 결의일자, 승인사항을 나타낸표

  Target Company	Major Shareholder	Resolution Date	Approval Details
  SK Gas Co., Ltd.	SK Discovery Co., Ltd.	2023.02.28	1. Purpose and Scope of Transaction (Service) Consulting for the SK Chemical-owned SK Bioscience subsidiary's stock sales effect and residual stake value enhancement 2. Service Period and Expected Transaction Amount Period: February 13, 2023, to July 31, 2023 Expected transaction amount: Approximately KRW 4.96 billion

2022년

* Report Items

• (Note 1) Internal Director Jeon Kwang-hyun was reappointed on March 28, 2022.
• (주2) Independent Director Park Jung-soo was reappointed on March 28, 2022.
• (주3)Non-Executive Director Ahn Jae-hyun was newly appointed on March 28, 2022.

2021

* Reporting items

• (Note 1) Independent Director Ahn Yang-ho was reappointed on March 31, 2021, and the Attendance Rate is calculated only for the period after the reappointment.
• (Note 2) For detailed information on this matter related to self-dealing approval, please refer to the following.

  Target Companies for Self-Dealing Approval, Major ShareholdersㅡResolution Date, Approval Details

  Target Company	Major Shareholders	Resolution Date	Approval Details
  SK Chemicals Co., Ltd. SK Gas Co., Ltd. SK D&D Co., Ltd. SK Bioscience Co., Ltd. SK Discovery Co., Ltd.	SK Discovery Co., Ltd.	2021.03.31	Main content: Promotion of "Achieving High Performance Organizations" through "Innovative Work Methods" of SK Discovery affiliates by establishing a Smart Work Center, jointly operating with related companies under SK Discovery, and sharing the associated costs based on the proportion of each company's members. Cost: One-time cost of approximately 23 million won and annual operating cost of approximately 7.7 million won, calculated based on the proportion of members of each company. Contract period: May 1, 2021, to April 30, 2024 (Renewable under the same conditions until March 2027 upon joint request)

• (Note 3) This matter pertains to approval for self-dealing. Please refer to the details below.

  Companies Subject to Self-Dealing Approval, Major Shareholders - Resolution Date, Approval Details

  Target Company	Major Shareholders	Resolution Date	Approval Details
  SK Gas Co., Ltd.	SK Discovery Co., Ltd.	2021.03.31	Main content: Temporary office space demand for remodeling SK Gas Co., Ltd.'s ECO Hub headquarters and improving operational efficiency of ECO Lab office space at SK Chemical Co., Ltd.'s ECO Lab headquarters Contract Period: March 22, 2021, to July 31, 2021 (The contract end date may change due to the re-spread of COVID-19, and if an extension is requested, it can be extended for an additional three months under the same conditions)

• (Note 4) This matter pertains to approval for self-dealing. Please refer to the details below.

  자기거래 승인 대상회사, 주요주주ㅡ 결의일자, 승인사항

  Target Company	Major Shareholders	Resolution Date	Approval Details
  SK Chemicals Co., Ltd. SK Gas Co., Ltd. SK D&D Co., Ltd. SK Bioscience Co., Ltd. SK Discovery Co., Ltd.	SK Discovery Co., Ltd.	2021.03.31	Main content: Joint operation of 'Discovery Lab' since June 2020 to promote Digital Transformation (DT) within Discovery. Renewal of the existing agreement is necessary for operations. Cost: Allocation based on the proportion of total assets of each company (SK Discovery Co., Ltd. 6%, SK Gas Co., Ltd. 49%, SK Chemical Co., Ltd. 19%, SK D&D Co., Ltd. 19%, SK Bioscience Co., Ltd. 7%) Contract Period: June 1, 2021, to December 31, 2021

• (Note 5) This matter pertains to approval for self-dealing. Please refer to the details below.

  자기거래 승인 대상회사, 주요주주ㅡ 결의일자, 승인사항

  Target Company	Major Shareholders	Resolution Date	Approval Details
  SK Plasma Co., Ltd.	SK Discovery Co., Ltd.	2021.08.25	Subject Item: Generic product of Revolade tablets (eltrombopag) 25mg/50mg SK Plasma Co., Ltd. provides research and development funds, and SK Chemical Co., Ltd. is progressing with product development. Expected Contract Period and Development Cost: Expected completion by December 2024 / KRW 23.5 billion

• (Note 6) This matter pertains to approval for self-dealing. Please refer to the details below.

  자기거래 승인 대상회사, 주요주주ㅡ 결의일자, 승인사항

  Target Company	Major Shareholders	Resolution Date	Approval Details
  SK Gas Co., Ltd.	SK Discovery Co., Ltd.	2021.09.13	Main content: Signing a settlement agreement to pay for the results of work performed by SK Gas Co., Ltd., either directly or through a third party, related to preparing for the utility supply business. Signing a service contract for support of the establishment of a new corporation. Expected Contract Amount: Total KRW 29.4 billion (Settlement agreement: KRW 27 billion, Service contract: KRW 2.4 billion)

Year 2020

* Report Items

• (Note 1) Director Kim Cheol was reappointed on March 25, 2020.
• (Note 2) Independent Director Choi Jung-hwan resigned as of March 25, 2020, and the attendance rate was calculated only until the resignation date.
• (Note 3) Independent Directors Moon Sung-hwan and Jo Hong-hee were appointed on March 25, 2020, and the attendance rate was calculated only after their appointment.
• (Note 4) Independent Director Ahn Yang-ho retired on December 1, 2020, due to the expiration of his term, and the attendance rate was calculated only until the retirement date.
• (Note 5) This matter pertains to the approval of related-party transactions. For detailed information, please refer to the following:

  Related-Party Transaction Approval: Target Companies, Directors, Resolution Date, Approval Details

  Target Companies	Directors	Resolution Date	Approval Details
  SK Discovery Co., Ltd. SK Gas Co., Ltd. SK Chemical Co., Ltd. SK D&D Co., Ltd.	SK Discovery Co., Ltd.	May 22, 2020	Main Content: Establishment of a dedicated organization (Discovery Lab) under SK Discovery Co., Ltd. to actively promote DT (Digital Transformation) and joint operation with subsidiaries, sharing the associated costs Operating Costs: Approximately KRW 30 million annually, calculated based on the ratio of each company's total assets, with quarterly settlements * Excluding the book value of any shares held by one subsidiary in another subsidiary Contract Period: June 01, 2020, to May 31, 2021 (Automatically extended if there is no intention to terminate; Board of Directors approval is scheduled in case of a significant increase in operating costs and sharing ratio)

• (Note 6) This matter pertains to the approval of related-party transactions. For detailed information, please refer to the following:

  Related-Party Transaction Approval: Target Companies, Major Shareholders, Resolution Date, Approval Details

  Target Companies	Directors	Resolution Date	Approval Details
  SK Gas Co., Ltd.	SK Discovery Co., Ltd.	August 26, 2020	Temporary lease of office space in ECO Lab, the headquarters of SK Chemicals Co., Ltd., by SK Gas Co., Ltd., due to a temporary demand for office space for the remodeling of SK Hub, SK Gas Co., Ltd.'s headquarters

  ※ The content is related to agenda items discussed at board of directors meetings held from the beginning of the fiscal year that includes the disclosure document creation reference date to the reference date.

2019

* Report Items

• (Note 1) Kim Cheol, an internal director, and Park Jung-soo, an independent director, were appointed on March 25, 2019. Therefore, the attendance rate calculation excludes the meetings held before their appointment.
• (Note 2) Ahn Deok-geun, an independent director, resigned on March 25, 2019. Therefore, the attendance rate calculation excludes the meetings held after his resignation.
  ※ The content is related to the agenda of the board of directors meetings held from the beginning of the business year that includes the disclosure document creation standard date to the standard date.