As of March 23, 2026, Waystar Holding's top three insider holders are Luxco S.A R.L. Derby (TenPercentOwner, 24.88Mn shares), Paul G Moskowitz (Director, 13.24Mn shares), William Chan (Chief Product Ai Officer, 1.58Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Luxco S.A R.L. Derby | 0 | 24,879,437 | 16 Sep, 2025 | |
| Pension Plan Investment Board Canada | 0 | 19,025,452 | 16 Sep, 2025 | |
| Paul G Moskowitz | 0 | 13,243,539 | 16 Sep, 2025 | |
| William Chan | Chief Product Ai Officer | 1,580,812 | 0 | 11 Mar, 2026 |
| Matthew J. Hawkins | Chief Executive Officer | 974,570 | 0 | 11 Mar, 2026 |
| T. Craig Bridge | Chief Transformation Officer | 670,768 | 0 | 11 Mar, 2026 |
| Christopher L. Schremser | Chief Technology Officer | 509,784 | 0 | 11 Mar, 2026 |
| Iii Eric L. (Ric) Sinclair | Chief Business Officer | 474,826 | 0 | 22 Jan, 2026 |
| Kimberly S. Wittman | Chief People Officer | 272,964 | 0 | 11 Mar, 2026 |
| Melissa F. (Missy) Miller | Chief Marketing Officer | 254,964 | 0 | 11 Mar, 2026 |
| Gregory R Packer | Chief Legal Officer | 196,964 | 0 | 11 Mar, 2026 |
| Matthew R. A. Heiman | See Remarks | 86,956 | 0 | 12 Jun, 2024 |
| Robert Demichiei | 36,896 | 0 | 16 Jun, 2025 | |
| Priscilla Hung | 13,829 | 0 | 16 Jun, 2025 | |
| Vivian E. Riefberg | 13,829 | 0 | 16 Jun, 2025 | |
| Aashima Gupta | 5,134 | 0 | 16 Jun, 2025 | |
| Michael F Roman | 5,134 | 0 | 16 Jun, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 09 Mar, 2026 | Christopher L. Schremser | Common Stock | A | 87,413 | $0.00 | 509,784 | D | A |
| 09 Mar, 2026 | Matthew J. Hawkins | Common Stock | A | 257,096 | $0.00 | 974,570 | D | A |
| 09 Mar, 2026 | Gregory R Packer | Common Stock | A | 65,817 | $0.00 | 196,964 | D | A |
| 09 Mar, 2026 | Melissa F. (Missy) Miller | Common Stock | A | 61,703 | $0.00 | 254,964 | D | A |
| 09 Mar, 2026 | T. Craig Bridge | Common Stock | A | 87,413 | $0.00 | 670,768 | D | A |
| 09 Mar, 2026 | William Chan | Common Stock | A | 82,271 | $0.00 | 1,580,812 | D | A |
| 09 Mar, 2026 | Kimberly S. Wittman | Common Stock | A | 61,703 | $0.00 | 272,964 | D | A |
| 20 Jan, 2026 | Iii Eric L. (Ric) Sinclair | Common Stock | A | 7,562 | $18.19 | 482,388 | D | M |
| 20 Jan, 2026 | Iii Eric L. (Ric) Sinclair | Common Stock | A | 32,663 | $4.14 | 515,051 | D | M |
| 20 Jan, 2026 | Iii Eric L. (Ric) Sinclair | Common Stock | D | 40,225 | $30.08 | 474,826 | D | S |
| 20 Jan, 2026 | Iii Eric L. (Ric) Sinclair | Stock Options (right to buy) | D | 7,562 | $0.00 | 173,938 | D | M |
| 20 Jan, 2026 | Iii Eric L. (Ric) Sinclair | Stock Options (right to buy) | D | 32,663 | $0.00 | 6,141 | D | M |
| 22 Dec, 2025 | Iii Eric L. (Ric) Sinclair | Common Stock | A | 9,701 | $4.14 | 484,527 | D | M |
| 22 Dec, 2025 | Iii Eric L. (Ric) Sinclair | Common Stock | D | 9,701 | $32.82 | 474,826 | D | S |
| 22 Dec, 2025 | Iii Eric L. (Ric) Sinclair | Stock Options (right to buy) | D | 9,701 | $0.00 | 38,804 | D | M |
| 10 Dec, 2025 | Christopher L. Schremser | Common Stock | A | 8,623 | $4.14 | 430,994 | D | M |
| 10 Dec, 2025 | Christopher L. Schremser | Common Stock | D | 8,623 | $30.41 | 422,371 | D | S |
| 10 Dec, 2025 | Christopher L. Schremser | Stock Options (right to buy) | D | 8,623 | $0.00 | 68,994 | D | M |
| 25 Nov, 2025 | Melissa F. (Missy) Miller | Common Stock | A | 3,400 | $18.19 | 196,661 | D | M |
| 25 Nov, 2025 | Melissa F. (Missy) Miller | Common Stock | D | 3,400 | $37.00 | 193,261 | D | S |