April 16, 2019

Form S-1/A

[Amend] General form for registration of securities under the Securities Act of 1933

April 12, 2019

Form S-1

General form for registration of securities under the Securities Act of 1933

March 21, 2019

10-K

Annual report pursuant to Section 13 and 15(d)

March 21, 2019

10-K

Annual report pursuant to Section 13 and 15(d)

March 21, 2019

10-Q

Quarterly report pursuant to Section 13 or 15(d) + Related Documents

March 21, 2019

10-Q

Quarterly report pursuant to Section 13 or 15(d) + Related Documents

March 21, 2019

4

Statement of changes in beneficial ownership of securities

March 21, 2019

4

Statement of changes in beneficial ownership of securities