Telkom Indonesia takes full control of TDE unit

PERUSAHAAN PERSEROAN (PERSERO) PT Telekomunikasi Indonesia Tbk (TLK) reports that it has purchased all shares in PT Telkom Data Ekosistem (TDE) previously held by its subsidiary PT Sigma Cipta Caraka (Telkomsigma).

Rhea-AI Filing Summary

PERUSAHAAN PERSEROAN (PERSERO) PT Telekomunikasi Indonesia Tbk (TLK) reports that it has purchased all shares in PT Telkom Data Ekosistem (TDE) previously held by its subsidiary PT Sigma Cipta Caraka (Telkomsigma). On September 17, 2026, Telkom acquired 1,445,020 Series A shares and 2,015,637,361,776 Series B shares, representing 19.19% of TDE’s issued and fully paid shares. Following this transaction, Telkom owns 10,504,517,594,408 shares, or 100% of TDE’s share capital.

The company states that the transaction supports Telkom’s Unlock DC Co initiative through a strategic partnership and Telkom Group’s streamlining program. Because the deal is between Telkom and its subsidiary, Telkom describes there being no significant impact on its financial condition. The transaction is classified as material information and an affiliate transaction under Indonesian Financial Services Authority regulations.

Key Figures

TDE Series A shares purchased: 1,445,020 shares TDE Series B shares purchased: 2,015,637,361,776 shares Stake acquired in TDE: 19.19% +3 more

6 metrics

TDE Series A shares purchased 1,445,020 shares Series A shares of PT Telkom Data Ekosistem acquired from Telkomsigma on September 17, 2026

TDE Series B shares purchased 2,015,637,361,776 shares Series B shares of PT Telkom Data Ekosistem acquired from Telkomsigma on September 17, 2026

Stake acquired in TDE 19.19% Portion of all issued and fully paid TDE shares previously owned by Telkomsigma

Total TDE shares owned after transaction 10,504,517,594,408 shares Total PT Telkom Data Ekosistem shares owned by Telkom Indonesia after the purchase

Ownership in TDE after transaction 100% Telkom Indonesia’s share ownership in PT Telkom Data Ekosistem following the purchase

Transaction date September 17, 2026 Date of the share purchase transaction in PT Telkom Data Ekosistem

Key Terms

material information or facts, affiliate transaction, Otoritas Jasa Keuangan, Disclosure of Material Information or Facts, +2 more

6 terms

material information or facts regulatory

"This transaction constitutes material information or facts for the Company"

affiliate transaction regulatory

"and is an affiliate transaction as intended in the Article 6"

Otoritas Jasa Keuangan regulatory

"In compliance with the Indonesian Financial Service Authority’s (Otoritas Jasa Keuangan"

Disclosure of Material Information or Facts regulatory

"Regulation No. 31/POJK.04/2015 on Disclosure of Material Information or Facts"

Strategic Partnership financial

"in order to support Telkom's Unlock DC Co through the Strategic Partnership"

An agreement between two or more independent companies to work together on specific goals—such as developing products, entering new markets, or sharing technology—while each company keeps its own identity. For investors, a strategic partnership can be like neighboring shops pooling resources to attract more customers: it can speed growth, lower costs or risks, and change a company’s future revenue or competitive position, so announcements often affect stock expectations.

Unlock DC Co financial

"in order to support Telkom's Unlock DC Co through the Strategic Partnership"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What transaction did TLK (Telkom Indonesia) announce regarding PT Telkom Data Ekosistem?

Telkom Indonesia announced the purchase of all PT Telkom Data Ekosistem (TDE) shares held by its subsidiary Telkomsigma, acquiring 1,445,020 Series A and 2,015,637,361,776 Series B shares. After the transaction, Telkom owns 100% of TDE.

What percentage of PT Telkom Data Ekosistem did TLK acquire from Telkomsigma?

Telkom Indonesia acquired a 19.19% stake in PT Telkom Data Ekosistem from its subsidiary Telkomsigma. This portion represented all TDE shares owned by Telkomsigma and increased Telkom’s ownership to 100% of TDE’s share capital.

What is Telkom Indonesia’s ownership in PT Telkom Data Ekosistem after this deal?

After the transaction, Telkom Indonesia owns 10,504,517,594,408 shares of PT Telkom Data Ekosistem, representing 100% of TDE shares. Previously, Telkomsigma held 19.19% of TDE, which has now been fully transferred to Telkom.

When did TLK complete the share purchase in PT Telkom Data Ekosistem?

The share purchase was dated September 17, 2026. On that date, Telkom Indonesia acquired all TDE shares held by Telkomsigma, including 1,445,020 Series A and 2,015,637,361,776 Series B shares.

How does TLK describe the financial impact of the TDE share purchase?

Telkom Indonesia states that the transaction has no significant impact on its financial condition because it was conducted between the company and its subsidiary. The event is disclosed as material information under Indonesian Financial Services Authority regulations.

How is the TDE transaction classified under Indonesian regulations for TLK?

The company classifies the TDE share purchase as material information or facts under OJK Regulation No. 31/POJK.04/2015 and as an affiliate transaction under OJK Regulation No. 42/POJK.04/2020 on Affiliate Transactions and Conflict of Interest Transactions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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Form 6-K

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REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13 a-16 OR 15d-16

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UNDER THE SECURITIES EXCHANGE ACT OF 1934

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For the month of September 2026

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Perusahaan Perseroan (Persero)

PT Telekomunikasi Indonesia Tbk

(Exact name of Registrant as specified in its charter)

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Telecommunications Indonesia

(A state-owned public limited liability Company)

(Translation of registrant’s name into English)

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Jl. Japati No. 1 Bandung 40133, Indonesia

(Address of principal executive office)

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

Form 20-F þ Form 40-F 

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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):

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Yes  No þ

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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):

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Yes  No þ

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SIGNATURES

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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.

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​ ​ ​ ​ ​ ​ ​ Date: September 18, 2026 ​ Perusahaan Perseroan (Persero) PT Telekomunikasi Indonesia Tbk ​ By: /s/ Edie Kurniawan ---------------------------------------------------- (Signature) ​ Edie Kurniawan SVP Corporate Secretary

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Number	:	Tel.80/LP 000/COP-M0000000/2026
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Jakarta,	September 18, 2026
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To
Board of Commissioners of the Indonesian Financial Services Authority Attn. Chief Executive of Capital Market Supervision, Derivative Finance and Carbon Exchanges Sumitro Djojohadikusumo Building Jl. Lapangan Banteng Timur No.2-4 Jakarta 10710
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Re	:	Share Purchase Transaction for All Shares of PT Sigma Cipta Caraka in PT Telkom Data Ekosistem by PT Telkom Indonesia (Persero) Tbk

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Dear Sir/Madam,

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In compliance with the Indonesian Financial Service Authority’s (Otoritas Jasa Keuangan/”OJK”) Regulation No. 31/POJK.04/2015 on Disclosure of Material Information or Facts by Issuers or Public Companies, as lastly amended by OJK Regulation No. 45 of 2024 on Development and Reinforcement of Issuers and Public Companies, we hereby inform you that:

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​	Issuer Name	:	PT Telkom Indonesia (Persero) Tbk
​	Business Sector	:	Telecommunication
​	Phone	:	(021) 5215109
​	E-mail Address	:	investor@telkom.co.id

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1.	Information or Material Facts	Purchase of All Shares of PT Sigma Cipta Caraka (“Telkomsigma”) in PT Telkom Data Ekosistem (“TDE”) by PT Telkom Indonesia (Persero) Tbk (“Telkom”)
2.	Date	September 17, 2026
3.	Description	a. Telkom's purchase of 1,445,020 Series A Shares and 2,015,637,361,776 Series B Shares or 19.19% (nineteen point nineteen percent) of all issued and fully paid-up TDE shares owned by Telkomsigma in order to support Telkom's Unlock DC Co through  the Strategic Partnership and Telkom Group's streamlining program. b. In connection with the purchase, 10,504,517,594,408 shares or 100% of TDE shares belong to Telkom.
4.	The Impact of the Events	Telkom's share ownership in TDE becomes 100% and considering that this transaction is carried out between the Company and the Company's Subsidiaries, there is no significant impact on the Company's financial condition.
5.	Others	This transaction constitutes material information or facts for the Company as intended in Indonesian Financial Service Authority’s Regulation No. 31/POJK.04/2015 regarding Disclosure of The Information or Material Facts by The Issuer or Public Company and is an affiliate transaction as intended in the Article 6 of Indonesian Financial Service Authority’s Regulation No. 42/POJK.04/2020 regarding Affiliate Transactions and Conflict of Interest Transactions “POJK 42/2020”). ​

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​ ​ However, the Proposed Transaction does not involve any conflicts of interest as referred to in POJK 42/2020. The Company will also pay attention to and fulfill compliance and obligations arising from these regulations.

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Thus, we submit this report. Thank you for your attention.

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Best Regards,

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/s/ Edie Kurniawan

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Edie Kurniawan

SVP Corporate Secretary