AMENDMENT NO. 6 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Waystar Holding Corp. TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on May 16, 2024. Registration No. 333-275004 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Delaware (State or other jurisdiction of incorporation or organization) 7373 (Primary Standard Industrial Classification Code Number) 84-2886542 (I.R.S. Employer Identification No.) 1550 Digital Drive, #300 Lehi, ...

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on April 29, 2024. Registration No. 333-275004 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 5 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Waystar Holding Corp. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7373 (Primary Standard Industrial Classification Code Number) 84-2886542 (I.R.S. Emp ...

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on March 22, 2024. FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Waystar Holding Corp. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) Registration No. 333-275004 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 4 TO 7373 (Primary Standard Industrial Classification Code Number) 84-2886542 (I.R.S. Emp ...

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on November 29, 2023. Registration No. 333-275004 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 3 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Waystar Holding Corp. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7373 (Primary Standard Industrial Classification Code Number) 84-2886542 (I.R.S. ...

TABLE OF CONTENTS TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Waystar Holding Corp. As filed with the U.S. Securities and Exchange Commission on November 15, 2023. Registration No. 333-275004 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 2 (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7373 (Primary Standard Industrial Classification Code Number) 84-2886542 (I.R.S. ...

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on October 26, 2023. Registration No. 333-275004 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Waystar Holding Corp. (Exact name of registrant as specified in its charter) 7373 (Primary Standard Industrial Classification Code Number) 84-2886542 (I.R.S. Employer Identification No.) 1550 Digital Drive, #300 Lehi, Utah 84043 (8 ...

TABLE OF CONTENTS Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 As filed with the U.S. Securities and Exchange Commission on October 16, 2023. FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Waystar Holding Corp. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7373 (Primary Standard Industrial Classification Code Number) 84-2886542 (I.R.S. Employer Identification No ...