SEC CIK 1771433
Yamamoto Mika
Reported ownership across 2 companies, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| FFIVview stock → | 17,271 | 2023-11-01 |
| BLview stock → | 16,692 | 2026-06-05 |
Position History — FFIV
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — FFIV
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2023-11-01 | Option exercise (derivative) | 523 | $0.00 | 2,092 |
| 2023-11-01 | Option exercise (derivative) | 807 | $0.00 | 6,458 |
| 2023-11-01 | Option exercise (derivative) | 794 | $0.00 | 0 |
| 2023-11-01 | Tax withholding | 3,979 | $0.00 | 17,271 |
| 2023-11-01 | Option exercise | 2,124 | $0.00 | 21,250 |
| 2023-10-31 | Grant / award | 8,004 | $0.00 | 19,126 |
| 2023-08-01 | Option exercise (derivative) | 1,512 | $0.00 | 0 |
| 2023-08-01 | Option exercise (derivative) | 807 | $0.00 | 7,265 |
| 2023-08-01 | Option exercise (derivative) | 794 | $0.00 | 794 |
| 2023-08-01 | Option exercise (derivative) | 523 | $0.00 | 2,615 |
| 2023-08-01 | Option exercise | 3,636 | $0.00 | 12,550 |
| 2023-08-01 | Tax withholding | 1,428 | $0.00 | 11,122 |
| 2023-05-02 | Open-market sale | 1,650 | $133.02 | 8,914 |
| 2023-05-01 | Option exercise (derivative) | 794 | $0.00 | 1,588 |
| 2023-05-01 | Option exercise (derivative) | 523 | $0.00 | 3,138 |
| 2023-05-01 | Option exercise (derivative) | 807 | $0.00 | 8,072 |
| 2023-05-01 | Option exercise (derivative) | 1,511 | $0.00 | 1,512 |
| 2023-05-01 | Option exercise | 3,635 | $0.00 | 11,992 |
| 2023-05-01 | Tax withholding | 1,428 | $0.00 | 10,564 |
| 2023-02-02 | Open-market sale | 1,612 | $151.49 | 8,357 |
| 2023-02-01 | Option exercise (derivative) | 523 | $0.00 | 3,661 |
| 2023-02-01 | Option exercise (derivative) | 794 | $0.00 | 2,382 |
| 2023-02-01 | Option exercise (derivative) | 807 | $0.00 | 8,879 |
| 2023-02-01 | Option exercise (derivative) | 1,511 | $0.00 | 3,023 |
| 2023-02-01 | Tax withholding | 1,466 | $0.00 | 9,969 |
| 2023-02-01 | Option exercise | 3,635 | $0.00 | 11,435 |
| 2022-11-02 | Open-market sale | 303 | $144.38 | 7,800 |
| 2022-11-02 | Open-market sale | 2,700 | $140.51 | 10,542 |
| 2022-11-02 | Open-market sale | 200 | $142.71 | 8,103 |
| 2022-11-02 | Open-market sale | 2,239 | $141.63 | 8,303 |
| 2022-11-01 | Option exercise (derivative) | 1,511 | $0.00 | 4,534 |
| 2022-11-01 | Grant / award (derivative) | 9,686 | $0.00 | 9,686 |
| 2022-11-01 | Option exercise (derivative) | 794 | $0.00 | 3,176 |
| 2022-11-01 | Option exercise (derivative) | 656 | $0.00 | 0 |
| 2022-11-01 | Option exercise (derivative) | 523 | $0.00 | 4,184 |
| 2022-11-01 | Tax withholding | 4,192 | $0.00 | 13,242 |
| 2022-11-01 | Option exercise | 3,484 | $0.00 | 17,434 |
| 2022-10-31 | Grant / award | 7,185 | $0.00 | 13,950 |
| 2022-08-02 | Open-market sale | 2,047 | $164.90 | 6,765 |
| 2022-08-01 | Option exercise (derivative) | 656 | $0.00 | 656 |
| 2022-08-01 | Option exercise (derivative) | 1,511 | $0.00 | 6,045 |
| 2022-08-01 | Option exercise (derivative) | 523 | $0.00 | 4,707 |
| 2022-08-01 | Option exercise (derivative) | 793 | $0.00 | 3,970 |
| 2022-08-01 | Tax withholding | 1,369 | $0.00 | 8,812 |
| 2022-08-01 | Option exercise | 3,483 | $0.00 | 10,181 |
| 2022-05-03 | Open-market sale | 899 | $171.33 | 6,698 |
| 2022-05-01 | Option exercise (derivative) | 794 | $0.00 | 4,763 |
| 2022-05-01 | Option exercise (derivative) | 523 | $0.00 | 5,230 |
| 2022-05-01 | Option exercise (derivative) | 1,511 | $0.00 | 7,556 |
| 2022-05-01 | Option exercise (derivative) | 656 | $0.00 | 1,312 |
| 2022-05-01 | Tax withholding | 1,369 | $0.00 | 7,597 |
| 2022-05-01 | Option exercise | 3,484 | $0.00 | 8,966 |
| 2022-02-02 | Open-market sale | 1,773 | $207.25 | 5,482 |
| 2022-02-01 | Option exercise (derivative) | 794 | $0.00 | 5,557 |
| 2022-02-01 | Option exercise (derivative) | 656 | $0.00 | 1,968 |
| 2022-02-01 | Option exercise (derivative) | 523 | $0.00 | 5,753 |
| 2022-02-01 | Option exercise (derivative) | 1,512 | $0.00 | 9,067 |
| 2022-02-01 | Option exercise | 3,485 | $0.00 | 8,649 |
| 2022-02-01 | Tax withholding | 1,394 | $0.00 | 7,255 |
| 2021-11-02 | Open-market sale | 3,072 | $218.32 | 6,810 |
| 2021-11-02 | Open-market sale | 792 | $219.38 | 6,018 |
| 2021-11-02 | Open-market sale | 854 | $220.37 | 5,164 |
| 2021-11-02 | Open-market sale | 1,100 | $217.51 | 9,882 |
| 2021-11-02 | Open-market sale | 300 | $215.66 | 10,982 |
| 2021-11-01 | Option exercise (derivative) | 794 | $0.00 | 6,351 |
| 2021-11-01 | Option exercise (derivative) | 1,511 | $0.00 | 10,579 |
| 2021-11-01 | Grant / award (derivative) | 6,276 | $0.00 | 6,276 |
| 2021-11-01 | Option exercise (derivative) | 656 | $0.00 | 2,624 |
| 2021-11-01 | Option exercise | 2,961 | $0.00 | 15,243 |
| 2021-11-01 | Tax withholding | 3,961 | $0.00 | 11,282 |
| 2021-10-29 | Grant / award | 7,118 | $0.00 | 12,282 |
| 2021-08-03 | Open-market sale | 1,797 | $208.31 | 5,164 |
| 2021-08-01 | Option exercise (derivative) | 1,511 | $0.00 | 12,090 |
| 2021-08-01 | Option exercise (derivative) | 656 | $0.00 | 3,280 |
| 2021-08-01 | Option exercise (derivative) | 794 | $0.00 | 7,145 |
| 2021-08-01 | Tax withholding | 1,164 | $206.51 | 6,961 |
| 2021-08-01 | Option exercise | 2,961 | $0.00 | 8,125 |
| 2021-06-11 | Open-market sale | 1,797 | $193.93 | 5,164 |
| 2021-05-01 | Option exercise (derivative) | 656 | $0.00 | 3,936 |
| 2021-05-01 | Option exercise (derivative) | 794 | $0.00 | 7,939 |
| 2021-05-01 | Option exercise (derivative) | 1,511 | $0.00 | 13,601 |
| 2021-05-01 | Tax withholding | 1,164 | $186.76 | 6,961 |
| 2021-05-01 | Option exercise | 2,961 | $0.00 | 8,125 |
| 2021-03-26 | Open-market sale | 469 | $210.00 | 5,164 |
| 2021-03-16 | Open-market sale | 469 | $200.00 | 5,633 |
| 2021-03-10 | Open-market sale | 3,284 | $195.00 | 6,102 |
| 2021-02-01 | Option exercise (derivative) | 793 | $0.00 | 8,733 |
| 2021-02-01 | Option exercise (derivative) | 656 | $0.00 | 4,592 |
| 2021-02-01 | Option exercise (derivative) | 1,511 | $0.00 | 15,112 |
| 2021-02-01 | Option exercise | 2,960 | $0.00 | 10,575 |
| 2021-02-01 | Tax withholding | 1,189 | $196.35 | 9,386 |
| 2020-11-02 | Grant / award (derivative) | 9,526 | $0.00 | 9,526 |
| 2020-11-01 | Option exercise (derivative) | 1,511 | $0.00 | 16,623 |
| 2020-11-01 | Option exercise (derivative) | 656 | $0.00 | 5,248 |
| 2020-11-01 | Option exercise | 2,167 | $0.00 | 9,426 |
| 2020-11-01 | Tax withholding | 1,811 | $132.94 | 7,615 |
| 2020-10-30 | Grant / award | 2,440 | $0.00 | 7,259 |
| 2020-08-01 | Option exercise (derivative) | 656 | $0.00 | 5,904 |
| 2020-08-01 | Option exercise (derivative) | 6,044 | $0.00 | 18,134 |
| 2020-08-01 | Option exercise | 6,700 | $0.00 | 7,455 |
| 2020-08-01 | Tax withholding | 2,636 | $135.90 | 4,819 |
| 2020-05-04 | Open-market sale | 265 | $132.16 | 755 |
| 2020-05-01 | Option exercise (derivative) | 656 | $0.00 | 6,560 |
| 2020-05-01 | Option exercise | 656 | $0.00 | 1,020 |
| 2020-02-01 | Option exercise (derivative) | 656 | $0.00 | 7,216 |
| 2020-02-01 | Tax withholding | 292 | $122.12 | 364 |
| 2020-02-01 | Option exercise | 656 | $0.00 | 656 |
| 2019-11-01 | Grant / award (derivative) | 7,872 | $0.00 | 7,872 |
| 2019-08-01 | Grant / award (derivative) | 24,178 | $0.00 | 24,178 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.