Walt David R (CIK 0001205236)

Latest company ownership

QTRX - Quanterix Corp
Role: Director
Shares held
1,871,675
Last filed at
Oct 3, 2025
Confidence Score
52.3
2025Q4
Confidence Score History
2017Q4 2025Q4
Shares held
193,700
Last filed at
Jan 5, 2017
Confidence Score
50.0
2025Q4
Confidence Score History
2015Q4 2025Q4
XCUR - EXICURE, INC.
Role: Director
Shares held
21,693
Last filed at
Jun 8, 2020
Confidence Score
50.0
2025Q4
Confidence Score History
2017Q3 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Jun 12, 2025 Jun 13, 2025 Quanterix Corp Director Buy 92.5 +160,000 9.37% ✗ $985K
Jun 6, 2025 Jun 9, 2025 Quanterix Corp Director Buy 100.0 +210,000 14.03% ✗ $1.1M
Oct 12, 2022 Sep 17, 2024 Quanterix Corp Director Buy 90.0 +45,000 3.12% ✗ $624.6K
Aug 10, 2022 Aug 10, 2022 Quanterix Corp Director Buy 100.0 +150,000 11.71% ✗ $1.3M
Mar 13, 2020 Mar 17, 2020 Quanterix Corp Director Buy 90.0 +54,064 4.42% ✗ $900.9K
Mar 13, 2020 Mar 16, 2020 EXICURE, INC. Director Buy 97.5 +291,066 16.47% ✗ $352.9K
Aug 2, 2019 Aug 6, 2019 EXICURE, INC. Director Buy 100.0 +1,000,000 130.26% ✗ $2M
Dec 11, 2017 Dec 13, 2017 Quanterix Corp Director Buy 100.0 +200,000 19.69% ✗ $3M
Sep 26, 2017 Sep 28, 2017 EXICURE, INC. Director Buy 97.5 +767,711 100.00% ✗ $805K
Feb 19, 2016 Feb 23, 2016 Dare Bioscience, Inc. Director Buy 77.5 +2,291 1.39% ✓ $4.8K
Feb 17, 2016 Feb 19, 2016 Dare Bioscience, Inc. Director Buy 86.3 +8,960 5.73% ✓ $18.8K
Feb 12, 2016 Feb 17, 2016 Dare Bioscience, Inc. Director Buy 86.3 +8,811 5.98% ✓ $17.6K
Feb 10, 2016 Feb 12, 2016 Dare Bioscience, Inc. Director Buy 86.3 +8,850 6.39% ✓ $18.2K
Feb 8, 2016 Feb 10, 2016 Dare Bioscience, Inc. Director Buy 86.3 +9,000 6.95% ✓ $19.3K
Feb 4, 2016 Feb 8, 2016 Dare Bioscience, Inc. Director Buy 86.3 +8,563 7.08% ✓ $19.7K
Feb 2, 2016 Feb 4, 2016 Dare Bioscience, Inc. Director Buy 86.3 +8,413 7.47% ✓ $19.5K
Jan 29, 2016 Feb 2, 2016 Dare Bioscience, Inc. Director Buy 86.3 +5,700 5.33% ✓ $13.6K
Jan 27, 2016 Jan 29, 2016 Dare Bioscience, Inc. Director Buy 86.3 +9,000 9.19% ✓ $22.1K
Jan 25, 2016 Jan 27, 2016 Dare Bioscience, Inc. Director Buy 86.3 +8,800 9.88% ✓ $21.1K
Jan 21, 2016 Jan 25, 2016 Dare Bioscience, Inc. Director Buy 91.3 +9,000 11.24% ✓ $20.5K
Jan 19, 2016 Jan 21, 2016 Dare Bioscience, Inc. Director Buy 91.3 +8,900 12.50% ✓ $21.7K
Jan 14, 2016 Jan 19, 2016 Dare Bioscience, Inc. Director Buy 91.3 +8,572 13.69% ✓ $21.7K
Jan 12, 2016 Jan 14, 2016 Dare Bioscience, Inc. Director Buy 91.3 +8,684 16.10% ✓ $24.2K
Jan 8, 2016 Jan 12, 2016 Dare Bioscience, Inc. Director Buy 91.3 +8,855 19.64% ✓ $25.4K
Jan 6, 2016 Jan 8, 2016 Dare Bioscience, Inc. Director Buy 91.3 +8,800 24.25% ✓ $26K
Jan 4, 2016 Jan 6, 2016 Dare Bioscience, Inc. Director Buy 91.3 +8,801 32.01% ✗ $26.7K
Dec 3, 2015 Dec 7, 2015 Dare Bioscience, Inc. Director Buy 91.3 +10,000 57.17% ✗ $37.5K
Nov 30, 2015 Dec 2, 2015 Dare Bioscience, Inc. Director Buy 91.3 +5,374 44.35% ✗ $17.5K
Nov 25, 2015 Nov 30, 2015 Dare Bioscience, Inc. Director Buy 91.3 +12,117 100.00% ✗ $40.2K