Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| HALO | Torley Helen | PRESIDENT AND CEO | 10/08/2026 | Verkauf | 110.51 | 200 | 22,102 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/08/2026 | Verkauf | 110.00 | 11,900 | 1,308,941 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/08/2026 | Verkauf | 108.91 | 3,090 | 336,526 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/08/2026 | Verkauf | 108.18 | 4,810 | 520,341 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/08/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/07/2026 | Verkauf | 113.69 | 200 | 22,739 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/07/2026 | Verkauf | 112.78 | 900 | 101,502 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/07/2026 | Verkauf | 111.84 | 10,300 | 1,151,942 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/07/2026 | Verkauf | 111.03 | 8,600 | 954,867 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/07/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/06/2026 | Verkauf | 110.81 | 1,780 | 197,245 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/06/2026 | Verkauf | 109.89 | 9,920 | 1,090,119 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/06/2026 | Verkauf | 109.33 | 6,000 | 656,004 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/06/2026 | Verkauf | 107.90 | 2,300 | 248,175 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 10/06/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HALO | Daly James M | Director | 10/01/2026 | Zuteilung | — | 1,169 | — | Form 4 |
| HALO | Posard Matthew L. | Director | 10/01/2026 | Verkauf | 110.04 | 100 | 11,004 | Form 4 |
| HALO | Posard Matthew L. | Director | 10/01/2026 | Verkauf | 109.57 | 1,100 | 120,526 | Form 4 |
| HALO | Posard Matthew L. | Director | 10/01/2026 | Verkauf | 108.45 | 3,300 | 357,898 | Form 4 |
| HALO | Posard Matthew L. | Director | 10/01/2026 | Verkauf | 107.17 | 730 | 78,233 | Form 4 |
| HALO | Posard Matthew L. | Director | 09/16/2026 | Verkauf | 108.99 | 4,000 | 435,964 | Form 4 |
| HALO | Posard Matthew L. | Director | 09/16/2026 | Verkauf | 108.04 | 8,896 | 961,124 | Form 4 |
| HALO | Posard Matthew L. | Director | 09/16/2026 | Verkauf | 106.83 | 3,000 | 320,484 | Form 4 |
| HALO | Posard Matthew L. | Director | 09/16/2026 | Verkauf | 106.13 | 3,100 | 329,009 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/11/2026 | Verkauf | 107.55 | 4,508 | 484,826 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/11/2026 | Verkauf | 107.15 | 15,492 | 1,660,030 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/11/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/10/2026 | Verkauf | 107.58 | 5,412 | 582,228 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/10/2026 | Verkauf | 107.01 | 14,588 | 1,561,091 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/10/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/09/2026 | Verkauf | 108.67 | 100 | 10,867 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/09/2026 | Verkauf | 107.82 | 6,596 | 711,187 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/09/2026 | Verkauf | 107.22 | 13,304 | 1,426,481 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 09/09/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HALO | Appelhans Dannielle | Director | 09/01/2026 | Zuteilung | — | 1,161 | — | Form 4 |
| HAL | Carre Eric | EVP & Chief Financial Officer | 08/31/2026 | Verkauf | 37.50 | 24,777 | 929,138 | Form 4 |
| HAL | Slocum Jeffrey Shannon | Director, EVP and COO | 08/19/2026 | Verkauf | 35.09 | 52,572 | 1,844,751 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/19/2026 | Verkauf | 107.77 | 3,200 | 344,848 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/19/2026 | Verkauf | 107.22 | 9,600 | 1,029,350 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/19/2026 | Verkauf | 106.36 | 7,200 | 765,778 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/19/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/18/2026 | Verkauf | 104.87 | 9,400 | 985,816 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/18/2026 | Verkauf | 104.11 | 4,897 | 509,827 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/18/2026 | Verkauf | 103.08 | 5,703 | 587,882 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/18/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HAL | Slocum Jeffrey Shannon | Director, EVP and COO | 08/18/2026 | Verkauf | 35.08 | 16,121 | 565,573 | Form 4 |
| HAL | Miller Jeffrey Allen | Director, President & CEO | 08/18/2026 | Verkauf | 35.00 | 124,483 | 4,356,905 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/17/2026 | Verkauf | 103.48 | 7,500 | 776,115 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/17/2026 | Verkauf | 102.55 | 9,000 | 922,977 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/17/2026 | Verkauf | 101.77 | 2,100 | 213,709 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/17/2026 | Verkauf | 100.46 | 500 | 50,229 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/17/2026 | Verkauf | 98.96 | 900 | 89,062 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 08/17/2026 | Optionsausübung | 18.41 | 20,000 | 368,200 | Form 4 |
| HALO | Connaughton Bernadette | Director | 08/10/2026 | Verkauf | 102.80 | 1,626 | 167,153 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 07/08/2026 | Verkauf | 80.19 | 1,035 | 82,994 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 07/08/2026 | Verkauf | 79.28 | 888 | 70,397 | Form 4 |
| HALO | Torley Helen | PRESIDENT AND CEO | 07/08/2026 | Optionsausübung | 12.07 | 1,923 | 23,211 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).