SEC Form 4 reporting owner
Kumar Neil
Kumar Neil has filed 109 Form 4 transactions reported between December 4, 2025 and September 17, 2026, as Chief Executive Officer of BridgeBio Pharma, Inc., a reporting owner of BridgeBio Oncology Therapeutics, Inc. and a reporting owner of Maze Therapeutics, Inc..
Name as filed: Kumar Neil
Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$46.0M
89 lines
Companies
3
with Form 4 filings
Latest transaction
Sep 17, 2026
transaction date
Roles and reported holdings
- BBIOBridgeBio Pharma, Inc.Dec 4, 2025 – Sep 17, 2026
Chief Executive Officer
Held directly243,327 sh as of Aug 18, 2026 · Form 4Held indirectly (latest line)495,686 sh as of Sep 17, 2026 · Form 424 months: $46.0M sold
- BBOTBridgeBio Oncology Therapeutics, Inc.Jun 16, 2026
Reporting owner
No common-stock holding reported on a purchase, sale, gift or withholding line.
- MAZEMaze Therapeutics, Inc.Mar 27, 2026
Reporting owner
No common-stock holding reported on a purchase, sale, gift or withholding line.
Transaction history
All 109 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.
| Date | Company | Type | Shares | Price | Value | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 1,279 | $69.57 | $89K@ $69.57 | 495,686 | Form 4 |
| Sep 17, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 8,721 | $69.01 | $602K@ $69.01 | 496,965 | Form 4 |
| Aug 19, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 100 | $85.65 | $9K@ $85.65 | 505,686 | Form 4 |
| Aug 19, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 1,800 | $84.69 | $152K@ $84.69 | 505,786 | Form 4 |
| Aug 19, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 8,100 | $83.86 | $679K@ $83.86 | 507,586 | Form 4 |
| Aug 18, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 1,199 | $83.77 | $100K@ $83.77 | 243,327 | Form 4 |
| Aug 18, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 14,602 | $82.99 | $1.2M@ $82.99 | 244,526 | Form 4 |
| Aug 18, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 17,279 | $82.21 | $1.4M@ $82.21 | 259,128 | Form 4 |
| Aug 18, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 1,900 | $81.15 | $154K@ $81.15 | 276,407 | Form 4 |
| Aug 16, 2026 | BBIOChief Executive Officer | Shares withheld for tax or exercise priceCode F · direct | 36,237 | $79.86 | $2.9M@ $79.86 | 278,307 | Form 4 |
| Aug 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 6,520 | — | — | 314,544 | Form 4 |
| Aug 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 11,554 | — | — | 308,024 | Form 4 |
| Aug 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 19,599 | — | — | 296,470 | Form 4 |
| Aug 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 33,544 | — | — | 276,871 | Form 4 |
| Jun 16, 2026 | BBOT | Grant or awardCode A · direct | 31,675 | — | — | 31,675 | Form 4 |
| Jun 5, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 4,415 | $68.96 | $304K@ $68.96 | 4,318,447 | Form 4 |
| Jun 5, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,148 | $67.20 | $480K@ $67.20 | 4,331,299 | Form 4 |
| Jun 5, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 4,416 | $68.96 | $305K@ $68.96 | 515,686 | Form 4 |
| Jun 5, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 8,437 | $67.88 | $573K@ $67.88 | 520,102 | Form 4 |
| Jun 5, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,147 | $67.20 | $480K@ $67.20 | 528,539 | Form 4 |
| Jun 4, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 450 | $68.27 | $31K@ $68.27 | 535,686 | Form 4 |
| Jun 4, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 15,921 | $67.74 | $1.1M@ $67.74 | 536,136 | Form 4 |
| Jun 4, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 1,429 | $66.72 | $95K@ $66.72 | 552,057 | Form 4 |
| Jun 4, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 2,200 | $65.72 | $145K@ $65.72 | 553,486 | Form 4 |
| May 21, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 800 | $70.92 | $57K@ $70.92 | 243,327 | Form 4 |
| May 21, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 11,250 | $70.48 | $793K@ $70.48 | 244,127 | Form 4 |
| May 21, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 5,072 | $69.22 | $351K@ $69.22 | 255,377 | Form 4 |
| May 21, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 6,725 | $68.30 | $459K@ $68.30 | 260,449 | Form 4 |
| May 21, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 2,256 | $67.57 | $152K@ $67.57 | 267,174 | Form 4 |
| May 16, 2026 | BBIOChief Executive Officer | Shares withheld for tax or exercise priceCode F · direct | 36,236 | $66.13 | $2.4M@ $66.13 | 269,430 | Form 4 |
| May 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 6,519 | — | — | 305,666 | Form 4 |
| May 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 11,553 | — | — | 299,147 | Form 4 |
| May 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 19,599 | — | — | 287,594 | Form 4 |
| May 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 33,544 | — | — | 267,995 | Form 4 |
| May 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,076 | $67.35 | $342K@ $67.35 | 4,359,397 | Form 4 |
| May 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 13,974 | $66.65 | $931K@ $66.65 | 4,364,473 | Form 4 |
| May 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 950 | $68.35 | $65K@ $68.35 | 555,686 | Form 4 |
| May 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,077 | $67.35 | $342K@ $67.35 | 556,636 | Form 4 |
| May 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 13,973 | $66.65 | $931K@ $66.65 | 561,713 | Form 4 |
| May 7, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 449 | $69.09 | $31K@ $69.09 | 4,378,447 | Form 4 |
| May 7, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 8,334 | $68.38 | $570K@ $68.38 | 4,378,896 | Form 4 |
| May 7, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 450 | $69.09 | $31K@ $69.09 | 575,686 | Form 4 |
| May 7, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 8,333 | $68.38 | $570K@ $68.38 | 576,136 | Form 4 |
| May 7, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 11,217 | $67.50 | $757K@ $67.50 | 584,469 | Form 4 |
| Apr 10, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 20,000 | $74.60 | $1.5M@ $74.60 | 595,686 | Form 4 |
| Apr 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,800 | $75.53 | $589K@ $75.53 | 4,418,447 | Form 4 |
| Apr 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,128 | $74.57 | $382K@ $74.57 | 4,426,247 | Form 4 |
| Apr 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,072 | $73.64 | $521K@ $73.64 | 4,431,375 | Form 4 |
| Apr 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,500 | $75.55 | $567K@ $75.55 | 615,686 | Form 4 |
| Apr 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,300 | $74.60 | $395K@ $74.60 | 623,186 | Form 4 |
| Apr 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,200 | $73.64 | $530K@ $73.64 | 628,486 | Form 4 |
| Mar 27, 2026 | MAZE | Grant or awardCode A · direct | 33,417 | — | — | 33,417 | Form 4 |
| Mar 17, 2026 | BBIOChief Executive Officer | Grant or awardCode A · direct | 104,313 | — | — | 104,313 | Form 4 |
| Mar 17, 2026 | BBIOChief Executive Officer | Grant or awardCode A · direct | 40,570 | — | — | 40,570 | Form 4 |
| Mar 13, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 9,759 | $69.23 | $676K@ $69.23 | 4,438,447 | Form 4 |
| Mar 13, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 10,241 | $68.39 | $700K@ $68.39 | 4,448,206 | Form 4 |
| Mar 13, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 10,310 | $69.20 | $713K@ $69.20 | 635,686 | Form 4 |
| Mar 13, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 9,690 | $68.36 | $662K@ $68.36 | 645,996 | Form 4 |
| Mar 12, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,815 | $69.29 | $403K@ $69.29 | 4,458,747 | Form 4 |
| Mar 12, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 13,885 | $68.47 | $951K@ $68.47 | 4,464,562 | Form 4 |
| Mar 12, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 300 | $70.15 | $21K@ $70.15 | 655,686 | Form 4 |
| Mar 12, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,363 | $69.32 | $372K@ $69.32 | 655,986 | Form 4 |
| Mar 12, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 14,337 | $68.48 | $982K@ $68.48 | 661,349 | Form 4 |
| Feb 19, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 602 | $72.80 | $44K@ $72.80 | 234,451 | Form 4 |
| Feb 19, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 8,528 | $72.08 | $615K@ $72.08 | 235,053 | Form 4 |
| Feb 19, 2026 | BBIOChief Executive Officer | Open-market saleCode S · direct | 18,923 | $71.03 | $1.3M@ $71.03 | 243,581 | Form 4 |
| Feb 16, 2026 | BBIOChief Executive Officer | Shares withheld for tax or exercise priceCode F · direct | 30,970 | $75.25 | $2.3M@ $75.25 | 262,504 | Form 4 |
| Feb 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 11,554 | — | — | 293,474 | Form 4 |
| Feb 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 19,600 | — | — | 281,920 | Form 4 |
| Feb 16, 2026 | BBIOChief Executive Officer | Option exerciseCode M · direct | 33,544 | — | — | 262,320 | Form 4 |
| Feb 11, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 3,961 | $73.25 | $290K@ $73.25 | 4,478,447 | Form 4 |
| Feb 11, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 4,404 | $72.65 | $320K@ $72.65 | 4,482,408 | Form 4 |
| Feb 11, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 3,775 | $71.46 | $270K@ $71.46 | 4,486,812 | Form 4 |
| Feb 11, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,860 | $70.70 | $556K@ $70.70 | 4,490,587 | Form 4 |
| Feb 11, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 3,994 | $73.25 | $293K@ $73.25 | 675,686 | Form 4 |
| Feb 11, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 4,484 | $72.64 | $326K@ $72.64 | 679,680 | Form 4 |
| Feb 11, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 3,716 | $71.44 | $265K@ $71.44 | 684,164 | Form 4 |
| Feb 11, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,806 | $70.69 | $552K@ $70.69 | 687,880 | Form 4 |
| Feb 10, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,960 | $72.27 | $431K@ $72.27 | 4,498,447 | Form 4 |
| Feb 10, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 14,040 | $71.80 | $1.0M@ $71.80 | 4,504,407 | Form 4 |
| Feb 10, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,799 | $72.28 | $419K@ $72.28 | 695,686 | Form 4 |
| Feb 10, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 14,201 | $71.80 | $1.0M@ $71.80 | 701,485 | Form 4 |
| Jan 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 1,855 | $78.10 | $145K@ $78.10 | 4,518,447 | Form 4 |
| Jan 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 10,677 | $77.46 | $827K@ $77.46 | 4,520,302 | Form 4 |
| Jan 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 6,067 | $76.53 | $464K@ $76.53 | 4,530,979 | Form 4 |
| Jan 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 1,401 | $75.61 | $106K@ $75.61 | 4,537,046 | Form 4 |
| Jan 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 375 | $78.19 | $29K@ $78.19 | 715,686 | Form 4 |
| Jan 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 10,519 | $77.61 | $816K@ $77.61 | 716,061 | Form 4 |
| Jan 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 6,955 | $76.72 | $534K@ $76.72 | 726,580 | Form 4 |
| Jan 9, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 2,151 | $75.75 | $163K@ $75.75 | 733,535 | Form 4 |
| Jan 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 300 | $75.20 | $23K@ $75.20 | 4,538,447 | Form 4 |
| Jan 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 8,135 | $74.38 | $605K@ $74.38 | 4,538,747 | Form 4 |
| Jan 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 11,565 | $73.65 | $852K@ $73.65 | 4,546,882 | Form 4 |
| Jan 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 400 | $75.16 | $30K@ $75.16 | 735,686 | Form 4 |
| Jan 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 8,085 | $74.38 | $601K@ $74.38 | 736,086 | Form 4 |
| Jan 8, 2026 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 11,515 | $73.64 | $848K@ $73.64 | 744,171 | Form 4 |
| Dec 15, 2025 | BBIOChief Executive Officer | Open-market saleCode S · direct | 1,700 | $75.24 | $128K@ $75.24 | 228,776 | Form 4 |
| Dec 15, 2025 | BBIOChief Executive Officer | Open-market saleCode S · direct | 28,311 | $74.60 | $2.1M@ $74.60 | 230,476 | Form 4 |
| Dec 12, 2025 | BBIOChief Executive Officer | Shares withheld for tax or exercise priceCode F · direct | 30,964 | $75.15 | $2.3M@ $75.15 | 258,787 | Form 4 |
| Dec 12, 2025 | BBIOChief Executive Officer | Option exerciseCode M · direct | 60,975 | — | — | 289,751 | Form 4 |
| Dec 5, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,712 | $73.75 | $569K@ $73.75 | 4,558,447 | Form 4 |
| Dec 5, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 12,288 | $73.04 | $898K@ $73.04 | 4,566,159 | Form 4 |
| Dec 5, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 7,483 | $73.76 | $552K@ $73.76 | 755,686 | Form 4 |
| Dec 5, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 12,517 | $73.05 | $914K@ $73.05 | 763,169 | Form 4 |
| Dec 4, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,700 | $74.80 | $426K@ $74.80 | 4,578,447 | Form 4 |
| Dec 4, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 12,200 | $74.42 | $908K@ $74.42 | 4,584,147 | Form 4 |
| Dec 4, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 5,708 | $74.80 | $427K@ $74.80 | 775,686 | Form 4 |
| Dec 4, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 12,192 | $74.42 | $907K@ $74.42 | 781,394 | Form 4 |
| Dec 4, 2025 | BBIOChief Executive Officer | Open-market saleCode S · indirect | 2,100 | $73.16 | $154K@ $73.16 | 793,586 | Form 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.