Who
Michael J. Berendt
Director
Company insider
Files Form 4 as: Director, Retension Pharmaceuticals; Director, Waters.
In numbers
- Trades disclosed
- 81
- Buys
- 0
- Sells
- 17
- Bought
- $0
- Sold
- $9.0M
- Companies
- 2
- Companies where not an officer
- 2
- First trade
- 3 Jan 2006
- Last trade
- 13 Oct 2026
- Last filed
- 13 Oct 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 13 Oct 2026filed 13 Oct 2026 | RTSN Retension PharmaceuticalsBiotechnology | SEC FORM 4 Code C | —4,026 | filing |
| 13 Oct 2026filed 13 Oct 2026 | RTSN Retension PharmaceuticalsBiotechnology | SEC FORM 4 Code C | —2,640 | filing |
| 13 Oct 2026filed 13 Oct 2026 | RTSN Retension Pharmaceuticalsoption or derivative · Biotechnology | SEC FORM 4 Code C | —4,026 | filing |
| 13 Oct 2026filed 13 Oct 2026 | RTSN Retension Pharmaceuticalsoption or derivative · Biotechnology | SEC FORM 4 Code C | —2,640 | filing |
| 8 Oct 2026filed 8 Oct 2026 | RTSN Retension Pharmaceuticalsoption or derivative · Biotechnology | SEC FORM 4 Code A | —5,636 at $0.00 | filing |
| 13 Aug 2021filed 16 Aug 2021 | WAT WatersLife-science tools | SEC FORM 4 Sold | $325K806 at $403.12 | filing |
| 12 Aug 2021filed 13 Aug 2021 | WAT WatersLife-science tools | SEC FORM 4 Sold | $1.6M4,000 at $398.43 | filing |
| 24 May 2021filed 25 May 2021 | WAT WatersLife-science tools | SEC FORM 4 Sold | $369K1,161 at $318.24 | filing |
| 4 Jan 2021filed 6 Jan 2021 | WAT WatersLife-science tools | SEC FORM 4 Code A | —439 at $0.00 | filing |
| 4 Jan 2021filed 6 Jan 2021 | WAT Watersoption or derivative · Life-science tools | SEC FORM 4 Code A | —1,352 at $0.00 | filing |
| 9 Nov 2020filed 10 Nov 2020 | WAT Watersoption or derivative · Life-science tools | SEC FORM 4 Code M | —4,000 at $0.00 | filing |
| 9 Nov 2020filed 10 Nov 2020 | WAT WatersLife-science tools | SEC FORM 4 Code M | $312K4,000 at $78.10 | filing |
| 9 Nov 2020filed 10 Nov 2020 | WAT WatersLife-science tools | SEC FORM 4 Sold | $920K4,000 at $230.10 | filing |
| 2 Jan 2020filed 3 Jan 2020 | WAT Watersoption or derivative · Life-science tools | SEC FORM 4 Code M | —4,000 at $0.00 | filing |
| 2 Jan 2020filed 3 Jan 2020 | WAT Watersoption or derivative · Life-science tools | SEC FORM 4 Code A | —1,601 at $0.00 | filing |
| 2 Jan 2020filed 3 Jan 2020 | WAT WatersLife-science tools | SEC FORM 4 Code M | $247K4,000 at $61.63 | filing |
| 2 Jan 2020filed 3 Jan 2020 | WAT WatersLife-science tools | SEC FORM 4 Sold | $940K4,000 at $234.93 | filing |
| 2 Jan 2020filed 3 Jan 2020 | WAT WatersLife-science tools | SEC FORM 4 Code A | —467 at $0.00 | filing |
| 25 Feb 2019filed 26 Feb 2019 | WAT WatersLife-science tools | SEC FORM 4 Sold | $719K3,000 at $239.64 | filing |
| 2 Jan 2019filed 4 Jan 2019 | WAT Watersoption or derivative · Life-science tools | SEC FORM 4 Code M | —3,500 at $0.00 | filing |
News
Ultima Genomics Selected for Landmark Large-Scale Immune Profiling Study with IMU Biosciences, UK Biobank and Waters CorporationWAT · prnewswire.com · 19 Oct 2026Waters Launches AI Link, Advancing AI-Enabled LC-MS Workflows from Research to ReleaseWAT · manilatimes.net · 13 Oct 2026New CellCarta and Waters partnership advances diagnosticsWAT · selectscience.net · 13 Oct 2026
0 headlines in the last 90 days name Michael J. Berendt; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.