Daniel J. Brennan
CIK 1595612 · EVP and CFO · last filed 2026-06-18
Daniel J. Brennan is an EVP and CFO who has filed 97 SEC Form 4 insider transactions across 4 companies since 2014. The most recent filing, for MDGL, was dated Jun 18, 2026. Across all open-market trades the lifetime net is −$45.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $11.7M across reported positions. 85 SEC filings were submitted jointly with BOSTON SCIENTIFIC CORP.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
BSX price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
300 BOSTON SCIENTIFIC WAY
MARLBOROUGH, MA 01752-1234
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MDGL | Director | 1,371 | $447.09 | $613.0K | $0 | 2 | 2026-06-18 |
| WAT | Director | 1,355 | $434.27 | $588.4K | $0 | 6 | 2026-02-27 |
| BSX | EVP and CFO | 232,618 | $45.05 | $10.48M | -$45.15M | 77 | 2025-02-19 |
| Nuance Communications, Inc. (NUAN) Delisted | Director | 0 | $55.99 | $0 | $0 | 5 | 2022-03-04 |
Recent Filings
97 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-18 | MDGL | Grant (A) | +404 | $0 | EDGAR |
| 2026-02-27 | WAT | Grant (A) | +23 | $0 | EDGAR |
| 2026-01-05 | WAT | Grant (A) | +307 | $0 | EDGAR |
| 2025-08-05 | MDGL | Grant (A) | +967 | $0 | EDGAR |
| 2025-02-19 | BSX | Notice (144) | −67,333 | -$7.09M | EDGAR |
| 2025-02-19 | BSX | Mixed | −24,340 | -$7.37M | EDGAR |
| 2025-02-18 | BSX | Notice (144) | −17,530 | -$1.83M | EDGAR |
| 2025-02-18 | BSX | Mixed | +6,810 | -$676.9K | EDGAR |
| 2025-02-14 | BSX | Mixed | +1,887 | -$186.9K | EDGAR |
| 2025-02-13 | BSX | Mixed | +17,530 | -$3.08M | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.