Tompkins Mark N.
Former 10% Owner | 10% Owner | Former Director +3 more
6 companies
Insider Signal Score
87
ExcellentTrades Analyzed
71
12M Win Rate
100.0%
Avg 3M Return
+8.4%
Avg 12M Return
+78.5%
Tompkins Mark N. is a Former Director at SERV with holdings across 6 companies. Recent SEC Form 4 filings include 3 buys and 0 sells.
Estimated insider holdings value: $81.0M based on current market prices.
Holdings by Company
SERVJul 31, 2023
Current Shares5.06M
Value$30.43M
Net Activity0
Bought: 0Sold: 0
GUERNov 12, 2021
Current Shares2.70M
Value$7.42M
Net Activity+250.0K
Bought: 250.0KSold: 0
SMTKFeb 23, 2021
Current Shares2.30M
Value$561.2K
Net Activity0
Bought: 0Sold: 0
AMSTJun 1, 2021
Current Shares2.04M
Value$2.23M
Net Activity-857,064
Bought: 20.0KSold: 877.1K
XCURSep 26, 2017
Current Shares1.83M
Value$4.38M
Net Activity+201.7K
Bought: 201.7KSold: 0
ALMUFeb 4, 2026
Current Shares1.80M
Value$35.96M
Net Activity-579,092
Bought: 440.8KSold: 1.02M
Transaction History
Showing 3 filings (page 4)
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|
| Sep 29, 2020 | AMST Amesite Inc. | 10% Owner | Buy | 20,000 | $5.00 | $100,000.00 | +0.7% | |
| Sep 26, 2017 | XCUR Exicure, Inc. | Former Director And 10% Owner | Buy | 166,667 | $3.00 | $500,001.00 | +10.0% | |
| Jun 15, 2017 | XCUR Exicure, Inc. | Director, 10% Owner | Buy | 35,000 | $0.03 | $875.00 | +3.6% |
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