X0202 SCHEDULE 13D 0002123294 XXXXXXXX LIVE Ordinary Shares, par value US$0.0001 per share 02/09/2026 false 0001948443 G7358S119 Raytech Holding Ltd

Unit 609 6/F Nan Fung Commercial Centre No.19 Lam Lok Street Kowloon Bay K3 000000

Raytech Holding Limited 852 2117 0236 Unit 609, 6/F, Nan Fung Commercial Centre No.19 Lam Lok Street Kowloon Bay K3 000000 0002123294 N Tao Wang a WC N F4 262319.00 0.00 262319.00 0.00 262319.00 N 9.63 IN 1. The Reporting Person is filing this Schedule 13D to report an increase in his beneficial ownership of the Issuer's Ordinary Shares following the transaction reported herein. 2. Represents 262,319 Ordinary Shares of Raytech Holding Limited (the "Company") indirectly held by Tao Wang ("Mr. Wang") through Yuan Chun Holding Co., Limited, a British Virgin Islands business company that is wholly-owned by Mr. Wang. 3. The percent ownership is calculated based upon an aggregate of 2,724,911 shares outstanding. 0001996676 N Yuan Chun Holding Co., Limited a WC N D8 262319.00 0.00 262319.00 0.00 262319.00 N 9.62 CO 1. The Reporting Person is filing this Schedule 13D to report an increase in his beneficial ownership of the Issuer's Ordinary Shares following the transactions reported herein. 2. Represents 262,319 Ordinary Shares of Raytech Holding Limited (the "Company") indirectly held by Tao Wang ("Mr. Wang") through Yuan Chun Holding Co., Limited, a British Virgin Islands business company that is wholly-owned by Mr. Wang. 3. The percent ownership is calculated based upon an aggregate of 2,724,911 shares outstanding. Ordinary Shares, par value US$0.0001 per share Raytech Holding Ltd Unit 609 6/F Nan Fung Commercial Centre No.19 Lam Lok Street Kowloon Bay K3 000000 This Schedule 13D is being filed by the following persons: (i) Mr. Tao Wang, and (ii) Yuan Chun Holding Co., Limited, a British Virgin Islands business company that is wholly-owned by Mr. Wang. Each of the foregoing persons are sometimes individually referred to herein as a "Reporting Person" and collectively as the "Reporting Persons." The address of the principal place of business for each of the Reporting Persons is: For individual: No. 221, Lane 118, Kangba Road, Pudong New Area, Shanghai For entity: Vistra Corporate Services Centre, Wickhams Cay II, Road Town, Tortola, VG1110, British Virgin Islands Mr. Wang is the director of Yuan Chun Holding Co., Limited. No. No. For Mr. Wang: China For Yuan Chun Holding Co., Limited: British Virgin Islands Yuan Chun Holding Co., Limited, one of the Reporting Persons, acquired 182,404 ordinary shares of the Issuer on February 9, 2026, at an aggregate purchase price of US$392,898, in a privately negotiated transaction. The funds used for the purchase were from the working capital of the Reporting Persons. The Reporting Persons acquired the Shares for investment purposes. For information regarding beneficial ownership, see the information presented on the cover page of this Schedule 13D. For information regarding beneficial ownership, see the information presented on the cover page of this Schedule 13D. Prior to February 9, 2026, the Reporting Persons beneficially owned an aggregate of 81,279 Ordinary Shares, consisting of 1,364 shares held directly by Mr. Wang and 79,915 shares held by Yuan Chun Holding Co., Limited, representing approximately 2.98% of the Issuer's outstanding Ordinary Shares purchased in open market transactions. On February 9, 2026, Yuan Chun Holding Co., Limited acquired 182,404 Ordinary Shares in a privately negotiated transaction for an aggregate purchase price of US$392,898. On March 13, 2026, Mr. Wang sold 1,364 Ordinary Shares held directly by himself in open market transactions, for an aggregate purchase price of US$5,393. Not applicable Not applicable Pursuant to Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the Reporting Persons have entered into a Joint Filing Agreement, a copy of which is filed as Exhibit 99.1 hereto, with respect to the joint filing of this Schedule 13D and any amendments thereto. Exhibit No. Description 99.1 Joint Filing Agreement by and among the Reporting Persons Tao Wang /s/ Tao Wang 03/25/2026 Yuan Chun Holding Co., Limited /s/ Tao Wang 03/25/2026