Dear Sir or Madam:

As you are aware, our firm represents Virtu Financial LLC and Virtu Americas LLC (collectively, "Virtu") in intellectual property matters, including matters involving the infringement of its intellectual property rights. We previously wrote to you on February 15, 2018 to demand the removal of copyright-protected works owned by Virtu, including but not limited to documents, software code, and source files (the "Protected Works"), which were posted on GitHub without Virtu's permission by the user, "alexbuz." We have found more repositories on GitHub containing Protected Works. These additional infringing documents, code, and files appear in the repositories at the below URLs:

1. https://github.com/alexbuz/S3-Directory-Uploader  
2. https://github.com/alexbuz/TabZilla

On behalf of Virtu, we hereby demand the immediate removal of the aforementioned infringing materials, including the repositories and all documents, code, and files within the repositories at the above-identified URLs, from your servers in accordance with Section 512(c) of the Digital Millennium Copyright Act ("DMCA").

This e-mail is official notification under Section 512(c) of the DMCA. Please be advised that the law requires you to remove or disable access to the infringing materials upon receiving this notice.

We are providing this notice under a good faith belief that the use of the material in the manner complained of is not authorized by the copyright owner, its agents, or the law. The information in this notification is accurate, and under penalty of perjury, we state that we are authorized to act on behalf of the copyright owner. You may contact me, as representative of Virtu, at the address provided below.

We demand that you respond to this correspondence immediately and provide written assurances that you have removed all documents, code, and files at the above-identified URLs and/or disabled access to them and will take all necessary steps to preserve Virtu's intellectual property rights.

Virtu reserves all of its rights and claims against GitHub. Nothing in this correspondence shall be deemed a waiver of any kind by Virtu. If you have any questions, please contact me directly at:

[private]  
Baker & Hostetler LLP  
[private]  

/s/ [private]