13D Filing: Kepler Gust and Blackboxstocks Inc (BLBX)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3)*

Blackboxstocks Inc.

(Name of Issuer)

Common Stock, par value $0.001

(Title of Class of Securities)

09229E105

(CUSIP Number)

Gust Kepler Blackboxstocks Inc. Lincoln Centre Three 5430 LBJ Freeway Suite 1485 Dallas, Texas 75240 (972) 726-9203   Copy to:   Jeffrey M. McPhaul Winstead PC 500 Winstead Building 2728 N. Harwood Street Dallas, Texas 75201 (214) 745-5394

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

September 28, 2017

(Date of Event Which Requires Filing of this Statement)

 

If the filing person has previously filed a
statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because
of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. □

Note: Schedules filed in paper format
shall include a signed original and five copies of the schedule, including all exhibits. See Rule.13d-7 for other parties to whom
copies are to be sent.

* The remainder of this cover page shall be
filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for
any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of
this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934
(“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions
of the Act (however, see the Notes).