Time on boards
- Boards served
- 3
- Current seats
- 3
- Board service
- 5 years
- Director since
- 2023
5 years of board service in total across 3 boards, counting each seat separately. Longest: Waters Corporation, 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Madrigal Pharmaceuticals Inc. June 16, 202699.4%
-
Waters Corporation May 21, 202699.0%
-
Waters Corporation May 22, 202599.3%
-
Waters Corporation May 23, 202499.5%
-
Waters Corporation May 23, 202399.3%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Oct 20, 2026 | Vertex Pharmaceuticals Incorporated | Grant or award | +795 | $503.47 | $400,259 |
| Jun 17, 2026 | Madrigal Pharmaceuticals Inc. | Grant or award | +404 | — | — |
| Feb 25, 2026 | Waters Corporation | Grant or award | +23 | — | — |
| Jan 2, 2026 | Waters Corporation | Grant or award | +307 | — | — |
| Aug 1, 2025 | Madrigal Pharmaceuticals Inc. | Grant or award | +967 | — | — |
| Feb 19, 2025 | Boston Scientific Corporation | Option exercise | +18,533 | $24.55 | $454,985 |
| Feb 19, 2025 | Boston Scientific Corporation | Option exercise | +16,865 | $17.26 | $291,090 |
| Feb 19, 2025 | Boston Scientific Corporation | Option exercise | +15,642 | $27.09 | $423,742 |
| Feb 19, 2025 | Boston Scientific Corporation | Option exercise | +9,483 | $40.12 | $380,458 |
| Feb 19, 2025 | Boston Scientific Corporation | Open-market sale | −67,333 | $105.24 | $7,086,125 |
| Feb 18, 2025 | Boston Scientific Corporation | Open-market sale | −2,900 | $104.08 | $301,832 |
| Feb 18, 2025 | Boston Scientific Corporation | Open-market sale | −14,630 | $104.67 | $1,531,322 |
| Feb 17, 2025 | Boston Scientific Corporation | Option exercise | +4,584 | — | — |
| Feb 17, 2025 | Boston Scientific Corporation | Shares withheld for tax | −2,217 | $106.11 | $235,246 |
| Feb 16, 2025 | Boston Scientific Corporation | Option exercise | +4,243 | — | — |
Questions about Daniel J. Brennan
What boards is Daniel J. Brennan on?
Daniel J. Brennan sits on the boards of Madrigal Pharmaceuticals Inc., Vertex Pharmaceuticals Incorporated and Waters Corporation.
How long has Daniel J. Brennan served on boards?
Our records show at least 5 years of board service across 3 boards, the earliest from 2023.
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