SEC ownership of PSYCHEMEDICS CORP

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000806517.

Comparable stake leader

Kamin Peter

Disclosed value leader

Kamin Peter

Comparable rows

0/16

Latest evidence

13 Dec 2024

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 1 signal
Latest parsed ownership date
13 Dec 2024
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0000806517
Issuer location
Acton, MA

Ownership snapshot

Top shareholders of PSYCHEMEDICS CORP (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Kamin Peter
Disclosed value leader
Kamin Peter
Comparable rows
0/16
Latest evidence
13 Dec 2024
3/4/5 Highest disclosed value: $4,081,342 16 rows are not safely comparable across share classes. Showing 1-8 of 16 holder rows.

Quick read

Kamin Peter has the largest disclosed position value at $4.08M.

0 of 16 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Kamin Peter's linked filing trail.
Disclosed position value Top 5
Kamin Peter $4.08M
Powell Anderson Capital Partners LLC $1.15M
Raymond C. Kubacki Jr. $1.15M
Harry F. Connick Sr. $419.9K
Walter S. Tomenson $346.7K

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-8 of 16 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Kamin Peter
3/4/5
Director, 10%+ Owner
class O/S missing
$4,081,342
1,736,741 shares
10 Dec 2024
Powell Anderson Capital Partners LLC
3/4/5
10%+ Owner
class O/S missing
$1,148,939
614,406 shares
13 Dec 2024
Raymond C. Kubacki Jr.
3/4/5
Chairman, CEO & President, Director
class O/S missing
$1,149,794
246,737 shares
22 May 2023
Harry F. Connick Sr.
3/4/5
Director
class O/S missing
$419,922
90,112 shares
13 May 2021
Walter S. Tomenson
3/4/5
Director
class O/S missing
$346,699
74,399 shares
20 May 2022
Fred J. Weinert
3/4/5
Director
class O/S missing
$333,577
71,583 shares
20 May 2022
Robyn C. Davis
3/4/5
Director
class O/S missing
$181,740
39,000 shares
17 Aug 2023
Michael I. Schaffer
3/4/5
VP of Laboratory Operations
class O/S missing
$170,039
36,489 shares
22 May 2023
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 16 Jun 2025.

Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 0
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 0 0 $0 $0 $0
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-17 of 17 reporting-owner rows connected to PSYCHEMEDICS CORP. Open a relationship link for the CIK-to-CIK filing trail.

Rows
17
Largest Forms 3/4/5 holder
Kamin Peter
Net 12M change
$0
Latest report
13 Dec 2024
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Kamin Peter Director, 10%+ Owner $4,081,342 Mixed 10 Dec 2024
Raymond C. Kubacki Jr. Chairman, CEO & President, Director $1,149,794 Mixed 22 May 2023
Powell Anderson Capital Partners LLC 10%+ Owner $1,148,939 Filing P/S 13 Dec 2024
Harry F. Connick Sr. Director $419,922 Mixed 13 May 2021
Walter S. Tomenson Director $346,699 Mixed 20 May 2022
Fred J. Weinert Director $333,577 Mixed 20 May 2022
Robyn C. Davis Director $181,740 Mixed 17 Aug 2023
Michael I. Schaffer VP of Laboratory Operations $170,039 Mixed 22 May 2023
Andrew Reynolds Director $130,480 Mixed 17 Aug 2023
Charles M. Doucot Executive Vice President $108,345 Filing P/S 17 Aug 2023
Darius G. Nevin Director, Other* $107,180 Mixed 17 Aug 2023
Andrew Limbek Vice President & Controller $64,602 Mixed 20 May 2022
Michael Weisenhoff Assistant Controller $18,640 Mixed 17 Aug 2023
Daniella Mehalik Vice President - Finance Mixed 22 Jan 2024
Brian Hullinger President & CEO, Director Mixed 17 Aug 2023
Shannon Shoemaker Chief Revenue Officer Mixed 21 Sep 2023
William B. Norris Assistant Controller Mixed 08 Nov 2022

Recent insider transactions for PSYCHEMEDICS CORP

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
No insider transactions were found in the last 12 months for this issuer.
* marks a reported price that did not pass the local price check.
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