Michael Schaffer

Currently holds a position at Psychemedics Corp

3.5

3.5

Position	Company	Period
Vice President - Laboratory Operations	Psychemedics Corp	April 1, 1999 -

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2022-12-20	2022-12-16	Psychemedics Corp (PMD)	B Purchase	57,916 -0.8% 188.94 US$3,240,813	57,916 -0.8%	188.94	US$3,240,813
2020-11-20	2020-11-18	Psychemedics Corp (PMD)	B Purchase	29,738 +36.8% 313.70 US$235,990	29,738 +36.8%	313.70	US$235,990
2019-06-14	2019-06-14	Psychemedics Corp (PMD)	S Sale	88,795 -12.3% 344.14 US$882,988	88,795 -12.3%	344.14	US$882,988
2019-06-14	2019-06-13	Psychemedics Corp (PMD)	S Sale	2,631 -10.2% 9.82 US$25,836	2,631 -10.2%	9.82	US$25,836
2019-06-14	2019-06-12	Psychemedics Corp (PMD)	S Sale	2,800 -9.8% 9.84 US$27,552	2,800 -9.8%	9.84	US$27,552
2017-09-06	2017-09-06	Psychemedics Corp (PMD)	S Sale	2,167 -5.9% 20.14 US$43,643	2,167 -5.9%	20.14	US$43,643