Alexander has a broad capital markets practice advising issuers and banks, covering IPOs (including dual-track processes), capital raises, private placements, block trades as well as equity linked instruments, hybrid bonds and repurchase programs. His previous transactions include the IPO of Deutsche Pfandbriefbank (2015) in connection with the re-privatization of the former Hypo Real Estate-Group, where he acted as issuer's counsel. He advised the underwriters on the 2014 capital raise of Deutsche Bank. His work on hybrid bonds has included the hybrid bonds issued by VTG (2015), which were used also for the purpose of the acquisition of AAE-Group. In connection with this, Alexander also advised VTG on their related capital increase and the subsequent listing of new shares. Also in 2015, he advised Brenntag on their issue of US-$ senior bond with warrant units and Siemens on their first public exchange program for warrants in relation to US-$ 3 bn senior bond with warrant units.

Alexander also advises financial institutions on regulatory matters, predominantly in capital market transactions that are driven by specific regulatory considerations. Besides equity capital market transactions, he structured, for example, at the beginning of 2014 standard templates for additional tier 1 capital instruments (AT1) in the form of write-down/write-up bonds and contingent convertibles for the German Banking Association (Bundesverband deutscher Banken) in a joint working group with Commerzbank, Deutsche Bank and UniCredit.

In addition, Alexander frequently advises financial institutions in relation to the Single Supervisory Mechanism. At the beginning of 2015, he represented a directly supervised European bank in one of the first proceedings before the administrative board of review. Recently, his practice has been particularly focused on the implementation of new requirements for banks, such as TLAC and MREL as well as additional capital requirements such as under SREP. Alexander was also involved in the transactions of Hypo Real Estate and WestLB (2009-2012) in the context of the stabilization of the financial markets, including the establishment of their respective bad banks, and advised the German Federal Ministry of Finance on the structuring of the European Financial Stability Facility (EFSF) (2010-2011).