Company: TAK
Filing Date: 2025-10-30
Form Type: 6-K
Source: 0001395064-25-000154
Chunk: 0

Company: TAKEDA PHARMACEUTICAL CO LTD
Filing Date: 2025-10-30
Form: 6-K
Chunk 0
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#### FORM 6-K
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#### U.S. SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
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#### Report of Foreign Private Issuer

#### Pursuant to Rule 13a-16 or 15d-16 of

#### the Securities Exchange Act of 1934

#### Commission File Number: 001-38757

#### For the month of October 2025
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### TAKEDA PHARMACEUTICAL COMPANY LIMITED
<div align='center'>(Translation of registrant’s name into English)

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#### 1-1, Nihonbashi-Honcho 2-Chome

#### Chuo-ku, Tokyo 103-8668

#### Japan
<div align='center'>(Address of principal executive offices)

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Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

<div align='center'>Form 20-F ☒ Form 40-F ☐</div>

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

Information furnished on this form:

Pursuant to the Financial Instruments and Exchange Act of Japan, Takeda Pharmaceutical Company Limited filed its Semi-annual Securities Report for The Six-month Period with the Director of the Kanto Local Finance Bureau in Japan on October 30, 2025. An English translation of such report is included as an exhibit hereto.

### EXHIBIT

### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

| Date: October 30, 2025 |     | TAKEDA PHARMACEUTICAL COMPANY LIMITED 
 By:                                   |     | /s/ Norimasa Takeda                               |
|:-----------------------|:----|:--------------------------------------|:----|:--------------------------------------------------|
|                        |     |                                       |     | Norimasa Taked