SEC CIK 1676780
Westfall Nicholas Michael
Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| CHEview stock → | 0 | 2025-08-04 |
Position History — CHE
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — CHE
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2025-08-04 | Open-market sale | 10,012 | $421.91 | 0 |
| 2025-05-09 | Option exercise (derivative) | 16,132 | $445.35 | 46,128 |
| 2025-05-09 | Option exercise (derivative) | 9,956 | $462.04 | 36,172 |
| 2025-05-09 | Option exercise | 16,132 | $445.35 | 23,056 |
| 2025-05-09 | Option exercise | 9,956 | $462.04 | 33,012 |
| 2025-05-09 | Tax withholding | 23,000 | $569.70 | 10,012 |
| 2025-02-14 | Option exercise (derivative) | 560 | $0.00 | 2,680 |
| 2025-02-14 | Grant / award (derivative) | 1,264 | $0.00 | 3,384 |
| 2025-02-14 | Option exercise (derivative) | 560 | $0.00 | 2,120 |
| 2025-02-14 | Tax withholding | 658 | $553.39 | 6,924 |
| 2025-02-14 | Option exercise | 342 | $553.39 | 7,582 |
| 2025-02-14 | Option exercise | 1,131 | $553.39 | 7,240 |
| 2024-10-22 | Grant / award (derivative) | 16,788 | $597.70 | 62,260 |
| 2024-09-09 | Open-market sale | 1,713 | $569.35 | 6,109 |
| 2024-09-04 | Option exercise (derivative) | 15,333 | $471.74 | 45,472 |
| 2024-09-04 | Tax withholding | 13,620 | $586.39 | 7,822 |
| 2024-09-04 | Option exercise | 15,333 | $471.74 | 21,442 |
| 2024-07-30 | Open-market sale | 2,000 | $561.58 | 6,109 |
| 2024-07-30 | Open-market sale | 2,000 | $561.58 | 5,990 |
| 2024-02-16 | Grant / award (derivative) | 1,066 | $0.00 | 3,240 |
| 2024-02-16 | Option exercise (derivative) | 504 | $0.00 | 2,678 |
| 2024-02-16 | Option exercise (derivative) | 504 | $0.00 | 2,174 |
| 2024-02-16 | Option exercise | 314 | $586.49 | 7,990 |
| 2024-02-16 | Option exercise | 471 | $586.49 | 8,461 |
| 2024-02-16 | Tax withholding | 352 | $586.49 | 8,109 |
| 2023-10-25 | Grant / award (derivative) | 14,406 | $509.46 | 60,805 |
| 2023-06-01 | Option exercise (derivative) | 1,330 | $413.19 | 59,069 |
| 2023-06-01 | Option exercise | 1,330 | $413.19 | 7,676 |
| 2023-06-01 | Option exercise (derivative) | 12,670 | $413.19 | 46,399 |
| 2023-06-01 | Open-market sale | 12,670 | $533.70 | 7,676 |
| 2023-06-01 | Option exercise | 12,670 | $413.19 | 20,346 |
| 2023-05-30 | Open-market sale | 1,330 | $540.34 | 6,346 |
| 2023-02-17 | Grant / award (derivative) | 1,054 | $0.00 | 3,182 |
| 2023-02-17 | Option exercise (derivative) | 386 | $0.00 | 2,128 |
| 2023-02-17 | Option exercise (derivative) | 386 | $0.00 | 2,514 |
| 2023-02-17 | Tax withholding | 548 | $515.12 | 7,676 |
| 2023-02-17 | Option exercise | 780 | $515.12 | 7,780 |
| 2023-02-17 | Option exercise | 444 | $515.12 | 8,224 |
| 2022-11-03 | Option exercise (derivative) | 13,500 | $306.70 | 60,399 |
| 2022-11-03 | Open-market sale | 13,500 | $477.19 | 7,000 |
| 2022-11-03 | Option exercise | 13,500 | $306.70 | 20,500 |
| 2022-10-31 | Grant / award (derivative) | 14,934 | $462.04 | 73,899 |
| 2022-05-10 | Open-market sale | 1,432 | $500.10 | 7,000 |
| 2022-02-18 | Option exercise (derivative) | 477 | $0.00 | 2,257 |
| 2022-02-18 | Grant / award (derivative) | 1,120 | $0.00 | 2,900 |
| 2022-02-18 | Option exercise (derivative) | 477 | $0.00 | 1,780 |
| 2022-02-18 | Option exercise | 964 | $459.77 | 8,442 |
| 2022-02-18 | Tax withholding | 638 | $459.77 | 8,432 |
| 2022-02-18 | Option exercise | 628 | $459.77 | 9,070 |
| 2021-11-04 | Option exercise (derivative) | 4,176 | $231.91 | 58,965 |
| 2021-11-04 | Option exercise (derivative) | 1,418 | $231.91 | 63,141 |
| 2021-11-04 | Option exercise | 1,418 | $231.91 | 3,302 |
| 2021-11-04 | Option exercise | 4,176 | $231.91 | 7,478 |
| 2021-11-03 | Open-market sale | 4,176 | $485.24 | 1,884 |
| 2021-11-02 | Open-market sale | 1,418 | $490.15 | 6,060 |
| 2021-10-29 | Grant / award (derivative) | 16,132 | $445.35 | 64,559 |
| 2021-06-11 | Option exercise (derivative) | 2,708 | $231.91 | 48,427 |
| 2021-06-11 | Option exercise | 2,708 | $231.91 | 7,478 |
| 2021-06-10 | Option exercise (derivative) | 2,289 | $231.91 | 51,135 |
| 2021-06-10 | Option exercise | 2,289 | $231.91 | 4,770 |
| 2021-06-09 | Option exercise (derivative) | 1,482 | $231.91 | 53,424 |
| 2021-06-09 | Option exercise | 1,482 | $231.91 | 2,481 |
| 2021-06-08 | Open-market sale | 2,708 | $485.04 | 999 |
| 2021-06-07 | Open-market sale | 2,289 | $488.55 | 3,707 |
| 2021-06-04 | Open-market sale | 1,482 | $500.12 | 5,996 |
| 2021-02-19 | Option exercise (derivative) | 589 | $0.00 | 2,315 |
| 2021-02-19 | Grant / award (derivative) | 1,008 | $0.00 | 2,734 |
| 2021-02-19 | Option exercise (derivative) | 589 | $0.00 | 1,726 |
| 2021-02-19 | Option exercise | 971 | $491.34 | 8,429 |
| 2021-02-19 | Tax withholding | 951 | $491.34 | 7,478 |
| 2021-02-19 | Option exercise | 1,190 | $491.34 | 7,458 |
| 2020-11-03 | Option exercise (derivative) | 7,527 | $231.91 | 54,906 |
| 2020-11-03 | Open-market sale | 7,527 | $490.65 | 6,268 |
| 2020-11-03 | Option exercise | 7,527 | $231.91 | 13,795 |
| 2020-11-03 | Option exercise (derivative) | 7,527 | $231.91 | 54,906 |
| 2020-11-03 | Option exercise | 7,527 | $231.91 | 13,795 |
| 2020-11-03 | Open-market sale | 7,527 | $490.65 | 6,268 |
| 2020-10-29 | Grant / award (derivative) | 15,333 | $471.74 | 62,433 |
| 2020-05-08 | Option exercise (derivative) | 11,895 | $135.85 | 47,100 |
| 2020-05-08 | Option exercise | 11,895 | $135.85 | 18,163 |
| 2020-05-08 | Open-market sale | 11,895 | $426.05 | 6,268 |
| 2020-05-07 | Option exercise (derivative) | 12,105 | $135.85 | 58,995 |
| 2020-05-07 | Open-market sale | 12,105 | $428.09 | 6,268 |
| 2020-05-07 | Option exercise | 12,105 | $135.85 | 18,373 |
| 2020-02-21 | Option exercise (derivative) | 676 | $0.00 | 2,132 |
| 2020-02-21 | Grant / award (derivative) | 772 | $0.00 | 2,904 |
| 2020-02-21 | Option exercise (derivative) | 676 | $0.00 | 2,808 |
| 2020-02-21 | Option exercise | 1,369 | $487.90 | 6,238 |
| 2020-02-21 | Tax withholding | 1,087 | $487.90 | 6,268 |
| 2020-02-21 | Option exercise | 1,117 | $487.90 | 7,355 |
| 2019-10-29 | Grant / award (derivative) | 14,000 | $413.19 | 71,100 |
| 2019-02-22 | Option exercise (derivative) | 395 | $0.00 | 2,530 |
| 2019-02-22 | Grant / award (derivative) | 954 | $0.00 | 3,484 |
| 2019-02-22 | Option exercise (derivative) | 395 | $0.00 | 2,925 |
| 2019-02-22 | Option exercise | 569 | $322.40 | 5,424 |
| 2019-02-22 | Tax withholding | 555 | $322.40 | 4,869 |
| 2019-02-22 | Option exercise | 803 | $322.40 | 4,855 |
| 2018-12-12 | Option exercise (derivative) | 6,000 | $157.36 | 69,100 |
| 2018-12-12 | Option exercise (derivative) | 12,000 | $135.85 | 57,100 |
| 2018-12-12 | Option exercise | 12,000 | $135.85 | 16,052 |
| 2018-12-12 | Option exercise | 6,000 | $157.36 | 22,052 |
| 2018-12-11 | Open-market sale | 5,709 | $301.75 | 16,343 |
| 2018-12-10 | Open-market sale | 12,291 | $302.47 | 4,052 |
| 2018-11-02 | Grant / award (derivative) | 13,500 | $306.70 | 75,100 |
| 2018-05-22 | Tax withholding | 220 | $333.53 | 4,052 |
| 2018-05-03 | Open-market sale | 2,276 | $312.50 | 4,272 |
| 2018-05-02 | Option exercise (derivative) | 10,000 | $106.59 | 64,519 |
| 2018-05-02 | Option exercise (derivative) | 2,919 | $70.30 | 61,600 |
| 2018-05-02 | Option exercise | 2,919 | $70.30 | 7,191 |
| 2018-05-02 | Open-market sale | 10,643 | $312.50 | 6,548 |
| 2018-05-02 | Option exercise | 10,000 | $106.59 | 17,191 |
| 2018-02-16 | Option exercise (derivative) | 354 | $0.00 | 2,496 |
| 2018-02-16 | Option exercise (derivative) | 354 | $0.00 | 2,142 |
| 2018-02-16 | Grant / award (derivative) | 1,178 | $0.00 | 3,320 |
| 2018-02-16 | Option exercise | 577 | $256.29 | 3,928 |
| 2018-02-16 | Option exercise | 722 | $256.29 | 4,650 |
| 2018-02-16 | Tax withholding | 378 | $256.29 | 4,272 |
| 2017-11-13 | Option exercise (derivative) | 10,000 | $157.36 | 74,519 |
| 2017-11-13 | Option exercise | 10,000 | $157.36 | 13,351 |
| 2017-11-13 | Open-market sale | 10,000 | $231.00 | 3,351 |
| 2017-11-03 | Grant / award (derivative) | 19,600 | $231.91 | 84,519 |
| 2017-05-22 | Tax withholding | 160 | $198.86 | 3,351 |
| 2017-02-17 | Option exercise (derivative) | 355 | $0.00 | 1,498 |
| 2017-02-17 | Grant / award (derivative) | 1,352 | $0.00 | 2,850 |
| 2017-02-17 | Tax withholding | 201 | $172.60 | 3,511 |
| 2017-02-17 | Tax withholding | 414 | $172.60 | 3,712 |
| 2017-02-17 | Option exercise | 569 | $172.60 | 3,400 |
| 2017-02-17 | Option exercise | 726 | $172.60 | 4,126 |
| 2016-11-04 | Grant / award (derivative) | 36,000 | $135.85 | 64,919 |
| 2016-06-08 | — | — | — | 2,831 |
| 2016-02-17 | Option exercise (derivative) | 482 | $0.00 | 1,853 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.