Who owns TÜMOSAN? Albayrak Group and the management team
Quick answer: Who owns TÜMOSAN? The company has been part of Albayrak Group since its privatization in 2004. According to records on the Public Disclosure Platform (KAP), the main shareholder is the Albayrak Group company Ereğli Tekstil Turizm Sanayi ve Ticaret A.Ş., with a stake of approximately 60.9 percent; members of the Albayrak family also hold small individual stakes. The remaining shares trade freely on Borsa Istanbul under the TMSN ticker. Ahmet Albayrak chairs the board, Muzaffer Albayrak leads the executive side as CEO, and the general manager is Halim Tosun. This file sets out the ownership structure, the management team and the general shape of Albayrak Group, with sources.
Ownership structure
TÜMOSAN was founded as a public enterprise in 1976 and operated for many years as a state economic enterprise. It was transferred to Albayrak Group under a privatization in 2004 and floated in 2012. According to the current shareholder table on the Public Disclosure Platform (KAP), the structure is as follows:
| Shareholder | Stake | Note |
|---|---|---|
| Ereğli Tekstil Turizm San. ve Tic. A.Ş. | ~60.9 percent | Albayrak Group company |
| Albayrak family members | ~1.74 percent each | Individual stakes |
| Free float and others | Remainder | BIST Yıldız, TMSN |
The company’s paid-in capital is 115 million Turkish lira. TÜMOSAN has subsidiaries in casting and technology; among them, TÜMOSAN Döküm operates independently enough to take part in the ANKIROS 2024 trade fair on its own.
What is Albayrak Group?
Albayrak Group is a Turkish conglomerate active in construction, port operations, logistics, media, paper production, textiles and industry. The group is also known for operating the Port of Trabzon and for port and infrastructure operations abroad. TÜMOSAN is the most visible company in the group’s industrial arm and the main brand carrying its defense-industry ambitions. The company’s defense portfolio is set out in the defense products guide, and its production infrastructure in the What is TÜMOSAN? file.
Management team
According to the company’s official senior management page, the lineup is as follows: Muzaffer Albayrak, CEO and board member; Halim Tosun, general manager (Vice-CEO); and Kurtuluş Öğün and Bülent Bolat, executive committee members. Ahmet Albayrak chairs the board, with Nuri Albayrak as deputy chairman; both represented the company at the ULAQ inventory-entry ceremony in December 2025.
General manager Halim Tosun’s position can be confirmed through multiple independent sources: the company’s official senior management page; a DHA report dated December 22, 2025 (the ULAQ ceremony); reports announcing the renewal of the Konyaspor sponsorship for the 2025-2026 season; and his signature on the responsibility statement in the financial report filed with the Public Disclosure Platform (KAP) on August 19, 2026. Tosun has appeared in the press with the general manager title since 2020. His predecessor, Kurtuluş Öğün, was the public face of the Pusat and the military engine programs in 2017-2019 and remains in post as an executive committee member.
Subsidiaries and brand visibility
Records on the Public Disclosure Platform (KAP) list TÜMOSAN’s casting- and technology-focused subsidiaries; TÜMOSAN Döküm is the most visible of these and exhibited its own products at ANKIROS 2024. On the brand side, the company holds the naming and shirt-front sponsorship of the Konyaspor football club; the sponsorship was renewed for a third time for the 2025-2026 season. The company also holds annual communication summits with its dealer network; the February 2025 summit took place in Cyprus. These visibility items should be read alongside TÜMOSAN’s regular disclosure obligations as a listed company: financial statements, responsibility statements and shareholding changes are published on the Public Disclosure Platform (KAP).
Where defense sits within the group
TÜMOSAN’s main revenue comes from tractor and engine sales; defense projects are not reported as a separate segment within the company, and defense revenue is not officially disclosed. The group’s visibility in defense runs through the Pusat 4×4 vehicle, the military engine programs and the marine engine integrated into the ULAQ. During the 2015-2017 ALTAY powerpack contract period, the company’s shares reacted markedly to project news; the share-price decline that followed the mutual termination announcement of February 24, 2017 received wide coverage in the financial press of the day. That episode went on record as an example of how defense projects can cut both ways for a listed company, through reputation and through the share price.
Frequently asked questions
Who is TÜMOSAN’s owner?
The main shareholder is the Albayrak Group company Ereğli Tekstil Turizm San. ve Tic. A.Ş. (~60.9 percent). The remainder is held by Albayrak family members and the free float on Borsa Istanbul.
Who is TÜMOSAN’s general manager?
Halim Tosun. His position is confirmed by the company’s official website, ceremony reports from December 2025 and a responsibility statement filed with the Public Disclosure Platform (KAP) in August 2026.
When was TÜMOSAN privatized?
It was transferred to Albayrak Group under a privatization in 2004 and floated on the stock exchange in 2012.
On which index do TÜMOSAN shares trade?
The company trades on the BIST Yıldız market under the TMSN ticker and is included in the BIST 500 and industrial indices.
Is Kurtuluş Öğün still with the company?
Yes. The former general manager is listed on the company’s official senior management page as an executive committee member.
Sources and verification note
Shareholding and capital figures come from the Public Disclosure Platform (KAP); management information was cross-checked against the company’s official page and current press reports. Accessed: August 13, 2026.
- https://kap.org.tr/tr/sirket-bilgileri/genel/1694-tumosan-motor-ve-traktor-sanayi-a-s
- https://www.tumosan.com.tr/en/senior-management
- https://www.dha.com.tr/ekonomi/tumosanin-yerli-marin-motoru-envantere-alindi-2782172
- https://www.albayrak.com.tr/sektorler/traktor-motor/tumosan-motor-ve-traktor-sanayi/
- https://beinsports.com.tr/haber/konyaspor-tumosan-ile-devam-dedi
- https://www.milliyet.com.tr/ekonomi/altay-tanki-sozlesmesi-iptal-oldu-tumosan-hisseleri-cakildi-2403933
