PTHS's three largest insider shareholders as of September 29, 2026 are Ezra M Friedberg (Director, 81.04K shares), Todd C Davis (Director, 75.83K shares), Knuettel Ii Francis (Cfo, Treas Secty, 30.84K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Ezra M Friedberg | Director | 81,042 | 0 | 81,042 | 28.7% | 07 Jul, 2026 |
| 2 | Todd C Davis | Director | 75,834 | 0 | 75,834 | 26.9% | 15 Jun, 2026 |
| 3 | Knuettel Ii Francis | Cfo, Treas Secty | 19,525 | 11,316 | 30,841 | 10.9% | 26 May, 2026 |
| 4 | Richard Malamut | Director | 27,422 | 0 | 27,422 | 9.7% | 06 Apr, 2026 |
| 5 | Peter Greenleaf | Director | 23,884 | 0 | 23,884 | 8.5% | 07 Jul, 2026 |
| 6 | Pharmaceuticals Inc Ligand | TenPercentOwner | 16,667 | 0 | 16,667 | 5.9% | 02 Jul, 2025 |
| 7 | Matthew Pauls | Director | 14,364 | 0 | 14,364 | 5.1% | 07 Jul, 2026 |
| 8 | Andrew J. Einhorn | Director | 12,000 | 0 | 12,000 | 4.3% | 29 Dec, 2025 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 02 Jul, 2026 | Peter Greenleaf | Director | Disposed S | 712 | $26.00 | $18.51K | 23,969 | Direct |
| 02 Jul, 2026 | Ezra M Friedberg | Director | Disposed S | 534 | $26.03 | $13.90K | 81,066 | Direct |
| 02 Jul, 2026 | Matthew Pauls | Director | Disposed S | 692 | $26.00 | $17.99K | 14,458 | Direct |
| 02 Jul, 2026 | Matthew Pauls | Director | Disposed S | 94 | $27.36 | $2.57K | 14,364 | Direct |
| 02 Jul, 2026 | Ezra M Friedberg | Director | Disposed S | 24 | $27.33 | $656 | 81,042 | Direct |
| 02 Jul, 2026 | Peter Greenleaf | Director | Disposed S | 85 | $27.27 | $2.32K | 23,884 | Direct |
| 15 Jun, 2026 | Ezra M Friedberg | Director | Disposed S | 224 | $27.12 | $6.08K | 81,659 | Direct |
| 15 Jun, 2026 | Ezra M Friedberg | Director | Disposed S | 59 | $27.94 | $1.65K | 81,600 | Direct |
| 11 Jun, 2026 | Todd C Davis | Director | Acquired P | 35,445 | $27.80 | $985.53K | 75,331 | Direct |
| 11 Jun, 2026 | Todd C Davis | Director | Acquired P | 503 | $28.73 | $14.45K | 75,834 | Direct |
| 22 May, 2026 | Knuettel Ii Francis | Cfo, Treas Secty | Disposed D | 13,947 | $0.00 | $0 | 19,525 | Direct |
| 22 May, 2026 | Knuettel Ii Francis | Cfo, Treas Secty | Disposed S | 1,500 | $26.84 | $40.26K | 11,316 | Indirect |
| 22 May, 2026 | Knuettel Ii Francis | Cfo, Treas Secty | Acquired A | 59,500 | — | — | 59,500 | Direct |
| 22 May, 2026 | Knuettel Ii Francis | Cfo, Treas Secty | Disposed D | 42,500 | — | — | 0 | Direct |
| 14 May, 2026 | Ezra M Friedberg | Director | Disposed F | 144 | $27.01 | $3.89K | 81,883 | Direct |
| 02 Apr, 2026 | Ezra M Friedberg | Director | Disposed S | 293 | $20.51 | $6.01K | 82,292 | Direct |
| 02 Apr, 2026 | Matthew Pauls | Director | Disposed S | 415 | $20.52 | $8.51K | 15,521 | Direct |
| 02 Apr, 2026 | Peter Greenleaf | Director | Disposed S | 420 | $20.52 | $8.62K | 25,058 | Direct |
| 02 Apr, 2026 | Richard Malamut | Director | Disposed S | 310 | $20.51 | $6.36K | 27,702 | Direct |
| 02 Apr, 2026 | Ezra M Friedberg | Director | Disposed S | 265 | $21.36 | $5.66K | 82,027 | Direct |