Booth Bruce
Director · KYMR, SION, VIGL
As of 2026-09-16, Booth Bruce has 242 Form 4 transactions on record across 3 companies — 208 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-29 | KYMR | Sale | 19,093 @ $107.76 | $2.1M | −0.8% of holding | 2,412,747 | Form 4 |
| 2026-06-29 | KYMR | Sale | 14,613 @ $106.63 | $1.6M | −0.6% of holding | 2,431,840 | Form 4 |
| 2026-06-29 | KYMR | Sale | 10,658 @ $108.28 | $1.2M | −0.4% of holding | 2,402,089 | Form 4 |
| 2026-06-29 | KYMR | Sale | 7,833 @ $109.75 | $860K | −0.3% of holding | 2,394,256 | Form 4 |
| 2026-06-29 | KYMR | Sale | 7,602 @ $110.67 | $841K | −0.3% of holding | 2,386,654 | Form 4 |
| 2026-06-29 | KYMR | Sale | 5,471 @ $105.78 | $579K | −0.2% of holding | 2,446,453 | Form 4 |
| 2026-06-29 | KYMR | Sale | 3,024 @ $107.76 | $326K | −0.6% of holding | 466,077 | Form 4 |
| 2026-06-29 | KYMR | Sale | 2,318 @ $106.63 | $247K | −0.5% of holding | 469,101 | Form 4 |
| 2026-06-29 | KYMR | Sale | 1,688 @ $108.28 | $183K | −0.4% of holding | 464,389 | Form 4 |
| 2026-06-29 | KYMR | Sale | 1,239 @ $109.75 | $136K | −0.3% of holding | 463,150 | Form 4 |
| 2026-06-29 | KYMR | Sale | 1,199 @ $110.67 | $133K | −0.3% of holding | 461,951 | Form 4 |
| 2026-06-29 | KYMR | Sale | 907 @ $111.20 | $101K | −0.0% of holding | 2,385,747 | Form 4 |
| 2026-06-29 | KYMR | Sale | 848 @ $105.78 | $90K | −0.2% of holding | 471,419 | Form 4 |
| 2026-06-29 | KYMR | Sale | 157 @ $111.20 | $17K | −0.0% of holding | 461,794 | Form 4 |
| 2026-06-26 | KYMR | Sale | 231,007 @ $108.14 | $25.0M | −8.2% of holding | 2,603,048 | Form 4 |
| 2026-06-26 | KYMR | Sale | 32,624 @ $109.79 | $3.6M | −1.3% of holding | 2,570,424 | Form 4 |
| 2026-06-26 | KYMR | Sale | 32,402 @ $108.14 | $3.5M | −6.2% of holding | 493,358 | Form 4 |
| 2026-06-26 | KYMR | Sale | 27,951 @ $114.94 | $3.2M | −1.1% of holding | 2,505,362 | Form 4 |
| 2026-06-26 | KYMR | Sale | 28,296 @ $107.57 | $3.0M | −1.0% of holding | 2,834,055 | Form 4 |
| 2026-06-26 | KYMR | Sale | 22,046 @ $117.85 | $2.6M | −0.9% of holding | 2,464,314 | Form 4 |
| 2026-06-26 | KYMR | Sale | 14,913 @ $113.97 | $1.7M | −0.6% of holding | 2,533,313 | Form 4 |
| 2026-06-26 | KYMR | Sale | 12,390 @ $118.66 | $1.5M | −0.5% of holding | 2,451,924 | Form 4 |
| 2026-06-26 | KYMR | Sale | 12,181 @ $117.09 | $1.4M | −0.5% of holding | 2,486,360 | Form 4 |
| 2026-06-26 | KYMR | Sale | 11,277 @ $110.49 | $1.2M | −0.4% of holding | 2,559,147 | Form 4 |
| 2026-06-26 | KYMR | Sale | 10,366 @ $111.51 | $1.2M | −0.4% of holding | 2,548,781 | Form 4 |
| 2026-06-26 | KYMR | Sale | 6,821 @ $115.69 | $789K | −0.3% of holding | 2,498,541 | Form 4 |
| 2026-06-26 | KYMR | Sale | 4,562 @ $109.79 | $501K | −0.9% of holding | 488,796 | Form 4 |
| 2026-06-26 | KYMR | Sale | 3,896 @ $114.94 | $448K | −0.8% of holding | 479,718 | Form 4 |
| 2026-06-26 | KYMR | Sale | 3,958 @ $107.57 | $426K | −0.7% of holding | 525,760 | Form 4 |
| 2026-06-26 | KYMR | Sale | 3,069 @ $117.85 | $362K | −0.6% of holding | 473,996 | Form 4 |
| 2026-06-26 | KYMR | Sale | 2,083 @ $113.97 | $237K | −0.4% of holding | 483,614 | Form 4 |
| 2026-06-26 | KYMR | Sale | 1,729 @ $118.66 | $205K | −0.4% of holding | 472,267 | Form 4 |
| 2026-06-26 | KYMR | Sale | 1,701 @ $117.09 | $199K | −0.4% of holding | 477,065 | Form 4 |
| 2026-06-26 | KYMR | Sale | 1,579 @ $110.49 | $174K | −0.3% of holding | 487,217 | Form 4 |
| 2026-06-26 | KYMR | Sale | 1,442 @ $111.51 | $161K | −0.3% of holding | 485,775 | Form 4 |
| 2026-06-26 | KYMR | Sale | 952 @ $115.69 | $110K | −0.2% of holding | 478,766 | Form 4 |
| 2026-06-26 | KYMR | Sale | 555 @ $112.49 | $62K | −0.0% of holding | 2,548,226 | Form 4 |
| 2026-06-26 | KYMR | Sale | 78 @ $112.49 | $9K | −0.0% of holding | 485,697 | Form 4 |
| 2026-06-25 | KYMR | Sale | 112,299 @ $120.66 | $13.5M | −3.7% of holding | 2,963,607 | Form 4 |
| 2026-06-25 | KYMR | Sale | 81,500 @ $116.53 | $9.5M | −2.5% of holding | 3,156,442 | Form 4 |
| 2026-06-25 | KYMR | Sale | 58,205 @ $115.57 | $6.7M | −1.8% of holding | 3,237,942 | Form 4 |
| 2026-06-25 | KYMR | Sale | 40,774 @ $121.38 | $4.9M | −1.4% of holding | 2,922,833 | Form 4 |
| 2026-06-25 | KYMR | Sale | 37,179 @ $119.71 | $4.5M | −1.2% of holding | 3,075,906 | Form 4 |
| 2026-06-25 | KYMR | Sale | 25,075 @ $127.37 | $3.2M | −0.9% of holding | 2,864,885 | Form 4 |
| 2026-06-25 | KYMR | Sale | 24,268 @ $117.50 | $2.9M | −0.8% of holding | 3,132,174 | Form 4 |
| 2026-06-25 | KYMR | Sale | 19,089 @ $118.60 | $2.3M | −0.6% of holding | 3,113,085 | Form 4 |
| 2026-06-25 | KYMR | Sale | 15,660 @ $120.66 | $1.9M | −2.8% of holding | 543,864 | Form 4 |
| 2026-06-25 | KYMR | Sale | 14,351 @ $108.83 | $1.6M | −0.4% of holding | 3,318,839 | Form 4 |
| 2026-06-25 | KYMR | Sale | 11,711 @ $124.61 | $1.5M | −0.4% of holding | 2,895,285 | Form 4 |
| 2026-06-25 | KYMR | Sale | 10,860 @ $123.62 | $1.3M | −0.4% of holding | 2,906,996 | Form 4 |
| 2026-06-25 | KYMR | Sale | 11,375 @ $116.53 | $1.3M | −2.0% of holding | 570,673 | Form 4 |
| 2026-06-25 | KYMR | Sale | 10,215 @ $113.70 | $1.2M | −0.3% of holding | 3,305,376 | Form 4 |
| 2026-06-25 | KYMR | Sale | 9,994 @ $107.30 | $1.1M | −0.3% of holding | 3,333,349 | Form 4 |
| 2026-06-25 | KYMR | Sale | 9,229 @ $114.65 | $1.1M | −0.3% of holding | 3,296,147 | Form 4 |
| 2026-06-25 | KYMR | Sale | 8,389 @ $115.57 | $970K | −1.4% of holding | 582,048 | Form 4 |
| 2026-06-25 | KYMR | Sale | 5,689 @ $121.38 | $691K | −1.0% of holding | 538,175 | Form 4 |
| 2026-06-25 | KYMR | Sale | 5,144 @ $119.71 | $616K | −0.9% of holding | 559,524 | Form 4 |
| 2026-06-25 | KYMR | Sale | 4,977 @ $122.67 | $611K | −0.2% of holding | 2,917,856 | Form 4 |
| 2026-06-25 | KYMR | Sale | 3,716 @ $125.82 | $468K | −0.1% of holding | 2,891,569 | Form 4 |
| 2026-06-25 | KYMR | Sale | 3,507 @ $127.37 | $447K | −0.7% of holding | 530,069 | Form 4 |
| 2026-06-25 | KYMR | Sale | 3,359 @ $117.50 | $395K | −0.6% of holding | 567,314 | Form 4 |
| 2026-06-25 | KYMR | Sale | 2,646 @ $118.60 | $314K | −0.5% of holding | 564,668 | Form 4 |
| 2026-06-25 | KYMR | Sale | 2,197 @ $128.69 | $283K | −0.1% of holding | 2,862,688 | Form 4 |
| 2026-06-25 | KYMR | Sale | 2,011 @ $108.83 | $219K | −0.3% of holding | 593,614 | Form 4 |
| 2026-06-25 | KYMR | Sale | 1,915 @ $110.30 | $211K | −0.1% of holding | 3,316,924 | Form 4 |
| 2026-06-25 | KYMR | Sale | 1,639 @ $124.61 | $204K | −0.3% of holding | 534,321 | Form 4 |
| 2026-06-25 | KYMR | Sale | 1,609 @ $126.71 | $204K | −0.1% of holding | 2,889,960 | Form 4 |
| 2026-06-25 | KYMR | Sale | 1,517 @ $123.62 | $188K | −0.3% of holding | 535,960 | Form 4 |
| 2026-06-25 | KYMR | Sale | 1,437 @ $113.70 | $163K | −0.2% of holding | 591,726 | Form 4 |
| 2026-06-25 | KYMR | Sale | 1,399 @ $107.30 | $150K | −0.2% of holding | 595,648 | Form 4 |
| 2026-06-25 | KYMR | Sale | 1,289 @ $114.65 | $148K | −0.2% of holding | 590,437 | Form 4 |
| 2026-06-25 | KYMR | Sale | 698 @ $122.67 | $86K | −0.1% of holding | 537,477 | Form 4 |
| 2026-06-25 | KYMR | Sale | 719 @ $111.89 | $80K | −0.0% of holding | 3,315,591 | Form 4 |
| 2026-06-25 | KYMR | Sale | 614 @ $110.79 | $68K | −0.0% of holding | 3,316,310 | Form 4 |
| 2026-06-25 | KYMR | Sale | 522 @ $125.82 | $66K | −0.1% of holding | 533,799 | Form 4 |
| 2026-06-25 | KYMR | Sale | 337 @ $129.61 | $44K | −0.0% of holding | 2,862,351 | Form 4 |
| 2026-06-25 | KYMR | Sale | 305 @ $128.69 | $39K | −0.1% of holding | 529,764 | Form 4 |
| 2026-06-25 | KYMR | Sale | 265 @ $110.30 | $29K | −0.0% of holding | 593,349 | Form 4 |
| 2026-06-25 | KYMR | Sale | 223 @ $126.71 | $28K | −0.0% of holding | 533,576 | Form 4 |
| 2026-06-25 | KYMR | Sale | 159 @ $108.02 | $17K | −0.0% of holding | 3,333,190 | Form 4 |
45 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-06-24 | KYMR | Award / grant | 6,068 | 6,068 | Form 4 |
| 2026-06-17 | KYMR | Option exercise | 11,741 | 11,741 | Form 4 |
| 2026-06-17 | SION | Award / grant | 17,340 | 17,340 | Form 4 |
| 2026-06-17 | KYMR | Option exercise | 11,741 | 28,127 | Form 4 |
| 2026-04-22 | KYMR | Option exercise | 5,641 | 5,641 | Form 4 |
| 2026-04-22 | KYMR | Option exercise | 259 | 5,900 | Form 4 |
| 2026-04-22 | KYMR | Option exercise | 5,641 | 0 | Form 4 |
| 2026-04-22 | KYMR | Option exercise | 259 | 39,868 | Form 4 |
| 2026-04-15 | KYMR | Option exercise | 2,200 | 2,200 | Form 4 |
| 2026-04-15 | KYMR | Option exercise | 2,200 | 5,641 | Form 4 |
| 2026-04-14 | KYMR | Option exercise | 4,159 | 4,159 | Form 4 |
| 2026-04-14 | KYMR | Option exercise | 4,159 | 7,841 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 18,068 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 9,713 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 12,155 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 7,577 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 1,027,978 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 4,808,896 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 5,000 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 48,393 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 18,068 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 34,612 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 13,928 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 48,393 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 34,612 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 13,928 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 9,713 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 12,155 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 7,577 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 1,027,978 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 4,808,896 | 0 | Form 4 |
| 2025-08-05 | VIGL | Disposition | 5,000 | 0 | Form 4 |
| 2025-06-25 | KYMR | Award / grant | 16,000 | 16,000 | Form 4 |
| 2025-06-12 | SION | Award / grant | 19,959 | 19,959 | Form 4 |
| 2025-05-22 | VIGL | Award / grant | 5,000 | 5,000 | Form 4 |
| 2025-03-03 | VIGL | Award / grant | 48,393 | 48,393 | Form 4 |
| 2025-02-10 | SION | Conversion | 61,463 | 0 | Form 4 |
| 2025-02-10 | SION | Conversion | 1,051,051 | 0 | Form 4 |
| 2025-02-10 | SION | Conversion | 1,806,317 | 0 | Form 4 |
| 2025-02-10 | SION | Conversion | 1,092,504 | 0 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.