Derin Altan

Association Partner, Istanbul


Derin Altan has a wide-ranging practice which covers both debt and equity capital markets. Clients describe him as “detail-oriented, knowledgeable and very commercial” and laud his “ability to build bridges between parties.”
Chambers & Partners 2020


Derin Altan is a local partner of GKC Partners. Derin leads the capital markets practice group in Turkey and focuses on both equity capital markets and debt capital markets issuances including Islamic products, and also regularly advises clients on pure regulatory issues and M&A transactions involving listed entities. Derin represented both issuers and underwriters in the public offerings and projects regarding shares, covered warrants, public disclosures, derivative instruments and over-the-counter products, foreign securities, intermediary institutions. He holds "Advanced Level Capital Markets License" and "Corporate Governance Rating License" issued by the Turkish capital markets regulators.

Derin speaks regularly at industry conferences and seminars relating to equity and debt capital markets as well as financing and M&A transactions of public companies. Derin also appears as a guest lecturer in universities and industry groups. He was a member of the audit board in the Corporate Governance Association of Turkey between 2012 and 2013, and he currently is a member of the board of directors of the Association of Capital Markets Professionals.

Bars and Courts
Istanbul Bar Association
Bogazici University, Economics and Finance
Istanbul University
Faculty of Law
For Turkish law matters, White & Case works with GKC Partners in Istanbul.


Yapı ve Kredi Bankası A.Ş, in the issuance of AT1 compliant notes worth US$650 million, which is the first issuance of AT1 compliant notes by a Turkish issuer. In addition to the issuance of AT1 notes, as part of the capital strengthening programme of Yapı Kredi, we have represented Yapı Kredi in the rights issue, without restricting the pre-emption right of the existing shareholders, worth US$ 1 billion.

Ak Yatırım, Garanti Yatırım, İş Yatırım, Vakıf Yatırım, Yapı Kredi Yatırım and Ziraat Yatırım as underwriters in the secondary public offering of Aselsan Elektronik Sanayi ve Ticaret A.Ş., the leading Turkish high-technology defense and security company.

BAML, Credit Suisse, J.P. Morgan, Ünlü & Co, Citi, UniCredit, and Garanti Yatırım as the underwriters on the US$531 million initial public offering of Şok Marketler A.Ş. on Borsa Istanbul.

Enerjisa, a leading Turkish energy distribution and retail company, in its US$352 million initial public offering and listing on Borsa Istanbul.

U.N. Ro-Ro in its proposed initial public offering and listing on Borsa Istanbul.

J.P. Morgan Securities plc, Goldman Sachs International, HSBC Bank plc, BofA Merrill Lynch and Ak Yatırım Menkul Değerler A.S., on the initial public offering and Borsa Istanbul listing of MLP Sağlık Hizmetleri A.Ş., the largest private healthcare services provider in Turkey, for aggregate proceeds of US$332 million.

Goldman Sachs International, Merrill Lynch International and İş Yatırım Menkul Değerler A.Ş. on the US$288 million initial public offering and listing on Borsa Istanbul of Mavi Giyim Sanayi ve Ticaret A.Ş. It was the largest IPO in Turkey since 2010.

IHH Healthcare Berhad in relation to matters with Turkish law, in its Rule 144A / Regulation S offering and dual listing in the main markets of Malaysia and Singapore exchanges.

Salini Impregilo S.p.A., as issuer, and Salini Costruttori S.p.A., as selling shareholder, on the US and UK law aspects of its €513.3 million share placement to institutional investors of Salini Impregilo S.p.A.'s shares.


Derin frequently publishes in journals, newspapers and magazines mostly on matters relating to capital markets. He has been involved in more than a dozen of publications published in peer-reviewed academic journals in law and economics. His first book on initial public offerings is due to be published by the end of 2020.

Awards and Recognition

Highly Regarded, IFLR1000 Capital Markets – Turkey 2020

Leading Individual, Legal 500, Capital Markets – Turkey 2020

Band 2, Chambers & Partners, 2020 Capital Markets – Turkey