Common Shares, no par value

Aurinia Pharmaceuticals Inc.

#140, 14315 - 118 AVENUE, Edmonton, A0, T5L 4S6

Pursuant to Rule 13d-1 promulgated by the SEC under Section 13 of the Act, this statement is being filed jointly by the following: (i) ILJIN SNT Co., Ltd. ("ILJIN SNT"); (ii) ILJIN Steel Co., Ltd. ("ILJIN Steel"); (iii) ILJIN GLS Co., Ltd. ("ILJIN GLS"); (iv) Sae Kyoung Huh; (v) Seoung Eun Huh; and (vi) Chin Kyu Huh. Each of ILJIN SNT, ILJIN Steel, ILJIN GLS, each of Mrs. Sae Kyoung Huh and Seoung Eun Huh, and Mr. Huh are referred to individually as a "Reporting Person," and, collectively, as the "Reporting Persons." The Common Shares that may be deemed to be beneficially owned by each Reporting Person are set forth on Line 11 of such Reporting Person's coversheet and in Item 5 below. Each of Mrs. Sae Kyoung Huh and Seoung Eun Huh is an adult daughter of Mr. Huh who does not live in Mr. Huh's household. Mr. Huh disclaims beneficial ownership of the shares directly owned by each of Mrs. Sae Kyoung Huh and Seoung Eun Huh, and each of Mrs. Sae Kyoung Huh and Seoung Eun Huh disclaims beneficial ownership of the shares beneficially owned by each other and by Mr. Huh, ILJIN SNT, ILJIN Steel and ILJIN GLS. Mr. Huh is the direct owner of 100% of the issued and outstanding common shares of ILJIN GLS, the indirect owner of 100% of the issued and outstanding common shares of ILJIN SNT and the owner of a majority of the issued and outstanding shares of ILJIN Steel. Mr. Huh is responsible for voting and dispositive decisions of ILJIN SNT, ILJIN Steel and ILJIN GLS. Accordingly, Mr. Huh may be deemed to have investment and voting control over the Common Shares held by ILJIN SNT and ILJIN Steel and indirectly owned by ILJIN GLS. Based on the transactions and relationships described herein, the Reporting Persons may be deemed to constitute a "group" for purposes of Section 13(d)(3) of the Act. The filing of this Schedule 13D shall not be construed as an admission that the Reporting Persons are a group, or have agreed to act as a group

The principal business address of each of the Reporting Persons is (Dohwa-dong), 45 Mapo-daero, Mapo-gu, Seoul, South Korea.

ILJIN SNT is principally engaged in the business of manufacturing, trading and real estate. ILJIN Steel is principally engaged in the manufacturing and trading business. ILJIN GLS is acting as a holding company. Mr. Huh's principal occupation is serving as the Chairman and CEO of ILJIN GLS and is the indirect owner of 100% of the issued and outstanding common shares of ILJIN SNT and ILJIN Steel. Mr. Huh is responsible for voting and dispositive decisions of ILJIN SNT and ILJIN Steel. Ms. Sae Kyoung Huh's principal occupation is acting as the chief executive officer of ILJIN Semiconductor Co., Ltd., a company principally engaged in the business of manufacturing, trading and real estate that owns no Common Shares of the Issuer. Ms. Seoung Eun Huh's principal occupation is a homemaker. The name, citizenship, present principal occupation or employment and name, principal business address of any corporation or other organization in which such employment is conducted of each director and executive officer of ILJIN SNT and ILJIN Steel (the "Covered Persons") are set forth in Schedule A attached hereto.

During the five years preceding the date of this filing, none of the Reporting Persons and, to the knowledge of the Reporting Persons, none of the Covered Persons, has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

ILJIN SNT is a corporation organized under the laws of South Korea. ILJIN Steel is a corporation organized under the laws of South Korea. ILJIN GLS is a corporation organized under the laws of South Korea. Mr. Huh is a South Korean citizen. Ms. Sae Kyoung Huh is a South Korean citizen. Ms. Seoung Eun Huh is a South Korean citizen.

The information requested by this paragraph is incorporated herein by reference to the cover pages to this Amendment No. 17 to Schedule 13D. The percentage ownerships are based on 133,051,168 Common Shares outstanding as of August 5, 2026, as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the SEC on August 6, 2026.

The information requested by this paragraph is incorporated herein by reference to the cover pages to this Amendment No. 17 to Schedule 13D.

Since June 25, 2026, the Reporting Persons or, to the knowledge of the Reporting Persons, the Covered Persons did not buy, sell or otherwise transact in any Common Shares, except as follows: ILJIN SNT Co., Ltd. Date Transaction Common Shares Per Share Price July 16, 2026 Sale 30,000 $16.06 July 17, 2026 Sale 43,335 $16.04 July 20, 2026 Sale 50,000 $15.47 August 6, 2026 Sale 100,569 $16.11 August 7, 2026 Sale 200,000 $15.93 Total 423,904 ILJIN Steel Co., Ltd. Date Transaction Common Shares Per Share Price August 20, 2026 Sale 200,000 $17.14 Total 200,000 Seoung Eun Huh Date Transaction Common Shares Per Share Price June 30, 2026 Sale 1,091 $17.27 July 7, 2026 Sale 10,000 $16.16 July 9, 2026 Sale 300 $16.70 August 6, 2026 Sale 5,000 $16.14 Total 16,391

To the best knowledge of the Reporting Persons, no other person has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Shares beneficially owned by the Reporting Persons.

August 20, 2026.