Schaffer Michael I (CIK 0001250730)

Latest company ownership

PMDI - PSYCHEMEDICS CORP
Role: VP of Laboratory Operations
Shares held
36,489
Last filed at
May 24, 2023
Confidence Score
50.0
2025Q4
Confidence Score History
2007Q2 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
May 22, 2023 May 24, 2023 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -375 -1.02% ✗ $1.8K
May 15, 2023 May 16, 2023 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 37.5 -337 -0.91% ✗ $1.6K
Dec 16, 2022 Dec 20, 2022 PSYCHEMEDICS CORP VP of Laboratory Operations Buy 60.0 +100 0.27% ✗ $495
Nov 11, 2022 Nov 15, 2022 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -525 -1.40% ✗ $3.2K
May 13, 2022 May 17, 2022 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -337 -1.02% ✗ $2.2K
Nov 12, 2021 Nov 16, 2021 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -612 -1.83% ✗ $5.2K
Nov 18, 2020 Nov 20, 2020 PSYCHEMEDICS CORP VP of Laboratory Operations Buy 77.5 +500 1.91% ✗ $2.1K
Jun 12, 2019 Jun 14, 2019 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 22.5 -9,331 -32.74% ✗ $90.9K
Apr 30, 2019 May 2, 2019 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 45.0 -124 -0.43% ✗ $1.4K
Sep 6, 2018 Sep 10, 2018 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 22.5 -6,324 -18.10% ✗ $121.6K
May 8, 2018 May 10, 2018 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 37.5 -323 -0.93% ✗ $6.5K
Apr 30, 2018 May 2, 2018 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 45.0 -112 -0.32% ✗ $2.4K
Sep 1, 2017 Sep 6, 2017 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 22.5 -7,548 -17.86% ✗ $154K
May 23, 2017 May 25, 2017 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 26.3 -580 -1.36% ✗ $12.2K
May 10, 2017 May 15, 2017 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 22.5 -3,000 -6.60% ✗ $61.3K
May 8, 2017 May 9, 2017 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 37.5 -384 -0.84% ✗ $7.9K
May 1, 2017 May 3, 2017 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 45.0 -134 -0.30% ✗ $2.5K
May 23, 2016 May 24, 2016 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 26.3 -1,375 -2.99% ✗ $18.2K
May 8, 2016 May 11, 2016 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 37.5 -415 -0.90% ✗ $5.8K
May 2, 2016 May 2, 2016 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 45.0 -146 -0.31% ✗ $2.1K
Feb 16, 2016 Feb 16, 2016 PSYCHEMEDICS CORP VP of Laboratory Operations Buy 91.3 +4,507 10.74% ✗ $50K
Jun 15, 2015 Jun 17, 2015 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 26.3 -2,837 -6.33% ✗ $41.5K
May 22, 2015 May 27, 2015 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 26.3 -2,068 -4.41% ✗ $30.3K
May 8, 2015 May 11, 2015 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 37.5 -394 -0.83% ✗ $5.9K
May 5, 2014 May 7, 2014 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 26.3 -1,115 -2.66% ✗ $17.3K
Mar 10, 2014 Mar 12, 2014 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 20.0 -13,940 -10.24% ✗ $252.3K
Feb 11, 2014 Feb 13, 2014 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 26.3 -2,250 -5.50% ✗ $35.6K
May 28, 2013 May 29, 2013 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 26.3 -1,467 -3.72% ✗ $16.8K
Apr 22, 2013 Apr 24, 2013 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 26.3 -1,177 -3.45% ✗ $13.8K
May 24, 2012 May 29, 2012 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -608 -1.78% ✗ $5.9K
May 15, 2012 May 17, 2012 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -365 -1.40% ✗ $3.6K
Apr 7, 2012 Apr 10, 2012 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -973 -3.67% ✗ $9.6K
May 16, 2011 May 18, 2011 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -413 -2.12% ✗ $4.4K
May 10, 2011 May 12, 2011 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -409 -2.06% ✗ $4.3K
Apr 7, 2011 Apr 8, 2011 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -973 -4.67% ✗ $9.8K
May 10, 2010 Jun 18, 2010 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -932 -4.28% ✗ $7.6K
May 15, 2009 May 19, 2009 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -365 -3.60% ✗ $2.3K
May 11, 2009 May 13, 2009 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -568 -5.31% ✗ $3.6K
May 12, 2008 May 14, 2008 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -568 -8.40% ✗ $9.4K
May 25, 2007 May 25, 2007 PSYCHEMEDICS CORP VP of Laboratory Operations Sell 27.5 -238 -3.40% ✗ $4.4K