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Telecom spectrum rights in a share acquisition: material ownership changes under section 20 TKG 2021

Telecom spectrum rights in a share acquisition: section 20 TKG 2021 distinguishes ownership approval from spectrum transfer and Fernmeldebüro notification.

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25 September 2026 · Mag. Bernhard Brandauer, Rechtsanwalt

A share acquisition of a telecommunications company can trigger a dedicated regulatory review of spectrum-use rights. Section 20 TKG 2021 distinguishes three different situations: a transfer of spectrum, a material change in the ownership structure and prior notification where the Fernmeldebüro allocated the use rights.

For a share acquisition, section 20(4) is particularly important. A material change in the ownership structure of an undertaking holding spectrum-use rights allocated in a procedure under section 16 TKG 2021 requires prior approval by the regulatory authority. This is a separate review alongside the general share acquisition, the Firmenbuch and other approval areas.

This post distinguishes an ownership change from a direct transfer of the spectrum right. It also explains the documents for notification to the Fernmeldebüro and the rule that broadcasting-law restrictions remain unaffected under section 20(5).

Classify spectrum rights in the share acquisition

Which regulatory review does the transaction trigger?

Answer up to four questions about the spectrum portfolio, ownership structure and allocation authority. You receive an initial classification of the next review steps.

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01 Question 1

Does the target company hold spectrum-use rights and is their allocation route documented?

The next review step requires a clear record of the rights and whether they were allocated in a procedure under section 16 TKG 2021, by the regulatory authority or by the Fernmeldebüro.

All paths at a glance

Overview of all answers.

01

The spectrum portfolio is not documented well enough for the transaction decision.

Record every spectrum-use right, its allocation decision, the scope of use, the associated conditions and the responsible authority. Then establish whether the right was allocated in a procedure under section 16 TKG 2021 and whether the transaction changes the ownership structure or the right itself.

A Firmenbuch extract and a general list of permits are not enough for this review. The telecommunications documents must be compared with the draft acquisition agreement. The post on regulatory approvals in a business acquisition provides the broader map of approval areas.

02

The material ownership change may require approval before it is completed.

For an undertaking holding spectrum-use rights allocated in a procedure under section 16 TKG 2021, section 20(4) requires prior approval by the regulatory authority for a material change in the ownership structure. The share acquisition should therefore be assessed against direct and indirect holdings, voting rights and control arrangements.

Build the approval process into the transaction plan. Under section 20(4), the third to last sentences of section 20(1) apply accordingly. This brings in the rules on publication, the assessment of technical and competitive effects, possible conditions and refusal where an impairment of competition is likely despite conditions.

03

A direct transfer of spectrum allocated by the regulatory authority requires prior approval.

Section 20(1) TKG 2021 covers the transfer of spectrum allocated by the regulatory authority. This may concern the transfer of the use right alone or the transfer of the allocation decision to a third party. The review is separate from the share acquisition and from an ownership-structure change.

The regulatory authority assesses the technical and, in particular, competitive effects in the individual case. The approval may contain conditions. It must be refused if an impairment of competition remains likely despite conditions. The acquisition agreement should reflect the authority process and its consequences for completion.

04

Where the Fernmeldebüro allocated the right, prior notification with the statutory documents must be prepared.

Section 20(6) TKG 2021 requires prior notification to the Fernmeldebüro for a transfer of use rights for spectrum allocated by that office. The notification must include the exact designation of the decision allocating the rights, granting the operating authorisation and prescribing the fees, the transfer agreement, the identity of the successor and the successor's billing address.

The decision passes to the successor to the same extent when the Fernmeldebüro receives the notification. Before filing, check that the transfer agreement describes the relevant scope precisely and that all successor details are complete.

05

The review under section 20 TKG 2021 does not replace a review of broadcasting-law restrictions.

Section 20(5) TKG 2021 leaves restrictions on spectrum use arising from broadcasting law unaffected. If the target company also holds broadcasting-related activities or rights, that part needs a separate review.

Record in the transaction plan which spectrum rights remain with the company and which broadcasting-law questions remain open. Completing the ownership review under section 20(4) does not answer those broadcasting-law questions automatically.

06

Without a clear allocation route, approval and notification cannot be assigned reliably.

First identify the allocation decision and the responsible authority. For spectrum allocated by the regulatory authority, section 20(1) TKG 2021 requires prior approval for a transfer. For use rights allocated by the Fernmeldebüro, section 20(6) requires prior notification with specific supporting documents.

Record the allocation route in the data room and in the acquisition plan. Only then can you assess whether the planned step requires approval, notification, an ownership review under subsection 4 or a separate broadcasting-law review.

When a share acquisition triggers an ownership review

Section 20(4) TKG 2021 links prior approval to two conditions. The undertaking must hold spectrum-use rights allocated in a procedure under section 16. In addition, the ownership structure must change materially. This combination creates the specific approval requirement.

Before signing, the complete ownership structure of the target should therefore be recorded. This includes direct and indirect holdings, voting rights, existing control arrangements and the planned acquisition structure. The documents must show which change the share acquisition will actually produce.

The provision does not turn every share acquisition into a general telecommunications re-licensing. It requires a transaction-specific review of the ownership structure for a defined spectrum portfolio. The record should document both an approval requirement and the conclusion that the statutory conditions are not met.

Review a direct spectrum transfer separately

A transfer of a spectrum right is a different transaction step from a share acquisition. Under section 20(1) TKG 2021, a transfer of spectrum allocated by the regulatory authority requires prior approval. The provision covers both a transfer of the use right alone and a transfer of the allocation decision to a third party.

The regulatory authority assesses the technical and, in particular, competitive effects in the individual case. The approval may contain conditions where this is necessary to avoid impairments of competition. It must be refused if an impairment of competition remains likely despite conditions.

The data room should therefore make clear whether the right remains with the company or whether a transfer to a third party is planned. A clause about economic control does not replace this classification. The share acquisition and the spectrum transfer each need their own review and contractual allocation.

Which documents the Fernmeldebüro notification needs

For use rights for spectrum allocated by the Fernmeldebüro, section 20(6) TKG 2021 requires prior notification to the Fernmeldebüro before the rights are transferred. This route differs from the prior approval required for a transfer of spectrum allocated by the regulatory authority.

The notification must include four elements: the exact designation of the decision allocating the use rights, granting the operating authorisation and prescribing the fees under the provisions named by the statute, the agreement transferring the rights, information identifying the successor and the successor's billing address.

The decision passes to the successor to the same extent when the Fernmeldebüro receives the notification. In practical terms, the transfer agreement, the scope of the right and the successor details must be consistent before the notification is filed. Incomplete records can make the scope of the transfer difficult to establish.

Transaction review fields

Distinguish ownership change, transfer and notification

The correct route depends on the spectrum portfolio, the planned transaction step and the allocation authority.

Regulatory review fields for spectrum-use rights
Review field Core question Consequence under section 20 TKG 2021
Ownership structure Will the ownership structure change materially? Were the rights allocated in a procedure under section 16? Assess prior approval under subsection 4
Transfer by regulatory authority Is the spectrum right to be transferred to a third party? Use right or allocation decision? Prior approval under subsection 1
Transfer by Fernmeldebüro Did the Fernmeldebüro allocate the use right? Are decision, agreement, identity and billing address complete? Prior notification under subsection 6
Broadcasting law Are there broadcasting-law restrictions on use? Do those rules remain relevant alongside section 20? Separate review under subsection 5
Contract mechanics How is the authority step reflected in the SPA? Who supplies documents and cooperates? Set condition, responsibility and timetable

The concrete classification depends on the allocation decisions, the transaction structure and the actual spectrum portfolio. Section 20 TKG 2021 provides different routes for the situations shown.

Before completion: A share acquisition involving spectrum-use rights should be placed in the timetable only after the allocation decision and ownership structure have been classified. A direct transfer, a material ownership change and a broadcasting-law restriction follow different review paths. Booking an initial consultation (180 euro) can help organise the open transaction steps.

How the acquisition agreement should reflect the authority step

The acquisition agreement should list the spectrum portfolio as a separate schedule or clearly defined review field. For each right, the file should record the allocation decision, the allocation authority, the scope of use and relevant conditions. This connects the authority process to the specific share acquisition.

If section 20(4) requires approval, the agreement should treat prior approval as a separate completion step. A direct transfer requires consideration of prior approval under subsection 1 or prior notification under subsection 6, depending on the allocation authority. Responsibility for filing, documents, responses and cooperation should be allocated clearly.

The statute does not set a general uniform deadline for this review. The timetable must therefore be developed from the concrete procedure, the documents available and the intended completion. Approval or notification cannot be replaced by a simple Firmenbuch filing. The post on regulatory approvals provides the broader contract framework for authority requirements.

Frequently asked questions about spectrum rights in a share acquisition

The answers classify section 20 TKG 2021. The relevant allocation decisions, ownership structure and planned transaction step remain decisive.

FAQ

Telecommunications spectrum rights in a business acquisition

Does every share acquisition of a telecommunications company trigger approval under section 20 TKG 2021? +

No. Section 20(4) concerns material changes in the ownership structure of undertakings holding spectrum-use rights allocated in a procedure under section 16 TKG 2021. Whether these conditions are met must be reviewed against the spectrum portfolio and the planned change in holdings.

Is an ownership change the same as a transfer of a spectrum right? +

No. A material ownership change is addressed in subsection 4. A transfer of spectrum allocated by the regulatory authority falls under subsection 1. A transfer of use rights allocated by the Fernmeldebüro requires prior notification under subsection 6. The three situations must be classified separately.

Which documents are required for notification to the Fernmeldebüro? +

Subsection 6 requires the exact designation of the relevant allocation, operating-authorisation and fee decisions, the transfer agreement, information identifying the successor and the successor's billing address. Before filing, the documents should be checked for a consistent description of the transfer scope.

Do broadcasting-law restrictions remain relevant alongside section 20 TKG 2021? +

Yes. Section 20(5) states that restrictions on spectrum use arising from broadcasting law remain unaffected. Where this interface exists, the telecommunications classification must be accompanied by a separate broadcasting-law review.

Topics
TelecommunicationsSpectrum rightsOwnership structureShare acquisitionTKG 2021

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