13F Pro

SEC Form 4 reporting owner

Booth Bruce

Booth Bruce has filed 150 Form 4 transactions reported between December 10, 2025 and June 29, 2026, as a reporting owner of Kymera Therapeutics, Inc. and Director of Sionna Therapeutics, Inc..

Name as filed: Booth Bruce

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$216.1M
143 lines
Companies
2
with Form 4 filings
Latest transaction
Jun 29, 2026
transaction date

Roles and reported holdings

  • KYMRKymera Therapeutics, Inc.
    Dec 10, 2025 – Jun 29, 2026

    Reporting owner

    Held directly0 sh as of Apr 22, 2026 · Form 4
    Held indirectly (latest line)466,077 sh as of Jun 29, 2026 · Form 4

    24 months: $216.1M sold

  • SIONSionna Therapeutics, Inc.
    Jun 17, 2026

    Director

    No common-stock holding reported on a purchase, sale, gift or withholding line.

Transaction history

All 150 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jun 29, 2026KYMROpen-market saleCode S · indirect3,024$326K@ $107.76Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect2,318$247K@ $106.63Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect848$90K@ $105.78Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect19,093$2.1M@ $107.76Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect14,613$1.6M@ $106.63Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect5,471$579K@ $105.78Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect157$17K@ $111.20Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect1,199$133K@ $110.67Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect1,239$136K@ $109.75Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect1,688$183K@ $108.28Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect907$101K@ $111.20Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect7,602$841K@ $110.67Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect7,833$860K@ $109.75Form 4
Jun 29, 2026KYMROpen-market saleCode S · indirect10,658$1.2M@ $108.28Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect1,729$205K@ $118.66Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect3,069$362K@ $117.85Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect1,701$199K@ $117.09Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect952$110K@ $115.69Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect3,896$448K@ $114.94Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect2,083$237K@ $113.97Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect78$9K@ $112.49Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect1,442$161K@ $111.51Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect1,579$174K@ $110.49Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect4,562$501K@ $109.79Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect32,402$3.5M@ $108.14Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect3,958$426K@ $107.57Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect12,390$1.5M@ $118.66Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect22,046$2.6M@ $117.85Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect12,181$1.4M@ $117.09Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect6,821$789K@ $115.69Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect27,951$3.2M@ $114.94Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect14,913$1.7M@ $113.97Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect555$62K@ $112.49Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect10,366$1.2M@ $111.51Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect11,277$1.2M@ $110.49Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect32,624$3.6M@ $109.79Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect231,007$25.0M@ $108.14Form 4
Jun 26, 2026KYMROpen-market saleCode S · indirect28,296$3.0M@ $107.57Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect2,646$314K@ $118.60Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect3,359$395K@ $117.50Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect11,375$1.3M@ $116.53Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect8,389$970K@ $115.57Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect1,289$148K@ $114.65Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect1,437$163K@ $113.70Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect100$11K@ $111.89Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect86$10K@ $110.79Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect265$29K@ $110.30Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect2,011$219K@ $108.83Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect23$2K@ $108.02Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect1,399$150K@ $107.30Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect19,089$2.3M@ $118.60Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect24,268$2.9M@ $117.50Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect81,500$9.5M@ $116.53Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect58,205$6.7M@ $115.57Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect9,229$1.1M@ $114.65Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect10,215$1.2M@ $113.70Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect719$80K@ $111.89Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect614$68K@ $110.79Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect1,915$211K@ $110.30Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect14,351$1.6M@ $108.83Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect159$17K@ $108.02Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect9,994$1.1M@ $107.30Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect46$6K@ $129.61Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect305$39K@ $128.69Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect3,507$447K@ $127.37Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect223$28K@ $126.71Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect522$66K@ $125.82Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect1,639$204K@ $124.61Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect1,517$188K@ $123.62Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect698$86K@ $122.67Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect5,689$691K@ $121.38Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect15,660$1.9M@ $120.66Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect5,144$616K@ $119.71Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect337$44K@ $129.61Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect2,197$283K@ $128.69Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect25,075$3.2M@ $127.37Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect1,609$204K@ $126.71Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect3,716$468K@ $125.82Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect11,711$1.5M@ $124.61Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect10,860$1.3M@ $123.62Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect4,977$611K@ $122.67Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect40,774$4.9M@ $121.38Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect112,299$13.5M@ $120.66Form 4
Jun 25, 2026KYMROpen-market saleCode S · indirect37,179$4.5M@ $119.71Form 4
Jun 24, 2026KYMROpen-market saleCode S · indirect2,029$205K@ $101.14Form 4
Jun 24, 2026KYMROpen-market saleCode S · indirect14,490$1.5M@ $101.14Form 4
Jun 24, 2026KYMROpen-market saleCode S · indirect14,513$1.5M@ $100.42Form 4
Jun 24, 2026KYMROpen-market saleCode S · indirect103,688$10.4M@ $100.42Form 4
Jun 24, 2026KYMRGrant or awardCode A · direct6,068—Form 4
Jun 23, 2026KYMROpen-market saleCode S · indirect173$17K@ $99.98Form 4
Jun 23, 2026KYMROpen-market saleCode S · indirect1,235$123K@ $99.98Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect1,253$128K@ $102.48Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect918$93K@ $101.61Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect7,879$789K@ $100.17Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect7,319$729K@ $99.57Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect3,603$355K@ $98.58Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect2,247$219K@ $97.68Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect2,919$281K@ $96.24Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect1,648$157K@ $95.12Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect286$27K@ $94.48Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect2,179$201K@ $92.14Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect8,990$921K@ $102.48Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect6,597$670K@ $101.61Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect56,348$5.6M@ $100.17Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect52,442$5.2M@ $99.57Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect25,976$2.6M@ $98.58Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect16,084$1.6M@ $97.68Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect20,903$2.0M@ $96.24Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect11,783$1.1M@ $95.12Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect2,035$192K@ $94.48Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect14,921$1.4M@ $92.14Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect1,341$140K@ $104.38Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect2,560$265K@ $103.42Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect9,584$1.0M@ $104.38Form 4
Jun 22, 2026KYMROpen-market saleCode S · indirect18,313$1.9M@ $103.42Form 4
Jun 18, 2026KYMROpen-market saleCode S · indirect793$73K@ $92.16Form 4
Jun 18, 2026KYMROpen-market saleCode S · indirect4,526$416K@ $91.85Form 4
Jun 18, 2026KYMROpen-market saleCode S · indirect8,809$797K@ $90.48Form 4
Jun 18, 2026KYMROpen-market saleCode S · indirect5,672$523K@ $92.16Form 4
Jun 18, 2026KYMROpen-market saleCode S · indirect32,359$3.0M@ $91.85Form 4
Jun 18, 2026KYMROpen-market saleCode S · indirect62,897$5.7M@ $90.48Form 4
Jun 17, 2026KYMROpen-market saleCode S · indirect12,902$1.2M@ $90.38Form 4
Jun 17, 2026KYMROpen-market saleCode S · indirect92,169$8.3M@ $90.38Form 4
Jun 17, 2026KYMROption exerciseCode M · direct11,741$235K@ $20.00Form 4
Jun 17, 2026SIONDirectorGrant or awardCode A · direct17,340—Form 4
Apr 22, 2026KYMROpen-market saleCode S · indirect12$1K@ $90.08Form 4
Apr 22, 2026KYMROpen-market saleCode S · indirect88$8K@ $90.08Form 4
Apr 22, 2026KYMROpen-market saleCode S · direct5,900$531K@ $89.96Form 4
Apr 22, 2026KYMROption exerciseCode M · direct259$5K@ $20.00Form 4
Apr 22, 2026KYMROption exerciseCode M · direct5,641$80K@ $14.18Form 4
Apr 15, 2026KYMROpen-market saleCode S · indirect385$35K@ $90.10Form 4
Apr 15, 2026KYMROpen-market saleCode S · indirect2,750$248K@ $90.10Form 4
Apr 15, 2026KYMROption exerciseCode M · direct2,200$31K@ $14.18Form 4
Apr 14, 2026KYMROption exerciseCode M · direct4,159$59K@ $14.18Form 4
Mar 2, 2026KYMROpen-market saleCode S · indirect10,052$906K@ $90.13Form 4
Mar 2, 2026KYMROpen-market saleCode S · indirect71,814$6.5M@ $90.13Form 4
Dec 12, 2025KYMROpen-market saleCode S · indirect108$10K@ $91.04Form 4
Dec 12, 2025KYMROpen-market saleCode S · indirect570$52K@ $91.04Form 4
Dec 11, 2025KYMROpen-market saleCode S · indirect976$89K@ $91.23Form 4
Dec 11, 2025KYMROpen-market saleCode S · indirect5,125$468K@ $91.23Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect16,338$1.5M@ $93.20Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect9,060$837K@ $92.41Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect2,001$180K@ $90.14Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect3,391$303K@ $89.25Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect5,979$530K@ $88.64Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect85,862$8.0M@ $93.20Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect47,349$4.4M@ $92.41Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect10,545$951K@ $90.14Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect17,825$1.6M@ $89.25Form 4
Dec 10, 2025KYMROpen-market saleCode S · indirect31,459$2.8M@ $88.64Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.