Introduction

This page provides a comprehensive analysis of the known insider trading history of Mark McKechnie. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

The average trade profitability is the average return of all the open market purchases made by the insider in the last three years. To calculate this, we examine every open-market, unplanned purchase made by the insider, excluding all trades that were marked as part of a 10b5-1 trading plan. We then calculate the average performance of those trades over 3, 6, and 12 months, averaging each of those durations to generate a final performance metric for each trade. Finally, we average all of the performance metrics to calculate a performance metric for the insider. This list only includes insiders that have made at least three trades in the last two years.

If this insiders trade profitability is "N/A", then the insider either has not made any open-market purchases in the last three years, or the trades they’ve made are too recent to calculate a reliable performance metric.

Update Frequency: Daily

See the list of most profitable insider traders.

Companies with Reported Insider Positions

The SEC filings indicate Mark McKechnie has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:ACMR / ACM Research, Inc. See Remarks 900
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Mark McKechnie. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Trading History

This table shows the complete list of insider trades made by Mark McKechnie as disclosed to the Securities Exchange Commission (SEC).

File Date Tran Date Form Ticker Security Code 10b5-1 Shares Remaining Shares Percent
Change
Share
Price
Tran
Value
Remaining
Value
2025-05-16 2025-05-14 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -15,000 900 -94.34 25.22 -378,300 22,698
2025-05-16 2025-05-14 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 15,000 15,900 1,666.67 5.60 84,000 89,040
2025-03-14 2025-03-12 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -15,000 900 -94.34 27.42 -411,300 24,678
2025-03-14 2025-03-12 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 15,000 15,900 1,666.67 5.60 84,000 89,040
2025-02-10 2025-02-06 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -15,000 900 -94.34 22.00 -330,000 19,800
2025-02-10 2025-02-06 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 15,000 15,900 1,666.67 5.60 84,000 89,040
2024-10-08 2024-10-04 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -16,516 900 -94.83 22.00 -363,352 19,800
2024-10-08 2024-10-04 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 16,516 17,416 1,835.11 5.60 92,490 97,530
2024-06-07 2024-06-06 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -5,984 900 -86.93 22.92 -137,153 20,628
2024-06-07 2024-06-06 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 5,984 6,884 664.89 5.60 33,510 38,550
2024-06-07 2024-06-06 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -14,016 900 -93.97 22.92 -321,247 20,628
2024-06-07 2024-06-06 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 14,016 14,916 1,557.33 4.62 64,754 68,912
2024-01-16 2024-01-12 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -10,000 900 -91.74 22.00 -220,000 19,800
2024-01-16 2024-01-12 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 10,000 10,900 1,111.11 4.55 45,500 49,595
2023-10-13 2023-10-11 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -11,250 900 -92.59 20.00 -225,000 18,000
2023-10-13 2023-10-11 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 11,250 12,150 1,250.00 4.55 51,188 55,282
2023-09-05 2023-09-01 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -30,000 900 -97.09 18.00 -540,000 16,200
2023-09-05 2023-09-01 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 30,000 30,900 3,333.33 4.55 136,500 140,595
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -378 300 -55.75 69.07 -26,108 20,721
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -399 678 -37.05 68.01 -27,136 46,111
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -400 1,077 -27.08 67.13 -26,852 72,299
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -588 1,477 -28.47 65.59 -38,567 96,876
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -1,035 2,065 -33.39 64.42 -66,675 133,027
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -700 3,100 -18.42 63.42 -44,394 196,602
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -400 3,800 -9.52 61.57 -24,628 233,966
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -1,100 4,200 -20.75 60.56 -66,616 254,352
2022-03-11 2022-03-10 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 5,000 5,300 1,666.67 13.85 69,250 73,405
2022-03-11 2022-03-09 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 300 300 13.85 4,155 4,155
2022-03-11 2021-03-10 4 ACMR ACM Research, Inc.
Stock Option
M - Exercise -5,000 4,672 -51.70
2022-03-11 2021-03-09 4 ACMR ACM Research, Inc.
Stock Option
M - Exercise -300 9,672 -3.01
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Stock Option
M - Exercise -5,000 9,972 -33.40
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -166 0 -100.00 100.60 -16,700
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -300 166 -64.38 99.58 -29,874 16,530
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -200 466 -30.03 97.56 -19,512 45,463
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -374 666 -35.96 96.33 -36,027 64,156
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -607 1,040 -36.85 93.85 -56,967 97,604
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -2,932 1,647 -64.03 92.92 -272,441 153,039
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -421 4,579 -8.42 92.03 -38,745 421,405
2021-11-22 2021-11-18 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 5,000 5,000 13.85 69,250 69,250
2021-08-20 2021-08-19 4 ACMR ACM Research, Inc.
Stock Option
M - Exercise -5,000 14,972 -25.04
2021-08-20 2021-08-19 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -200 0 -100.00 83.89 -16,778
2021-08-20 2021-08-19 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -526 200 -72.45 82.74 -43,521 16,548
2021-08-20 2021-08-19 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -4,274 726 -85.48 81.91 -350,083 59,467
2021-08-20 2021-08-19 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 5,000 5,000 13.85 69,250 69,250
2021-03-16 2021-03-12 4 ACMR ACM Research, Inc.
Stock Option
M - Exercise -10,028 19,972 -33.43
2021-03-16 2021-03-12 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -10,028 0 -100.00 87.89 -881,361
2021-03-16 2021-03-12 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 10,028 10,028 13.85 138,888 138,888
2020-11-20 2020-11-19 4 ACMR ACM Research, Inc.
Stock Option
M - Exercise -7,500 22,500 -25.00
2020-11-20 2020-11-19 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -7,500 0 -100.00 74.45 -558,375
2020-11-20 2020-11-19 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 7,500 7,500 16.81 126,075 126,075
2020-08-31 2020-08-27 4 ACMR ACM Research, Inc.
Stock Option
M - Exercise -4,585 30,000 -13.26
2020-08-31 2020-08-27 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -4,585 0 -100.00 93.18 -427,230
2020-08-31 2020-08-27 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 4,585 4,585 13.85 63,502 63,502
2020-06-17 2020-06-15 4 ACMR ACM Research, Inc.
Stock Option
M - Exercise -5,415 34,585 -13.54
2020-06-17 2020-06-15 4 ACMR ACM Research, Inc.
Class A Common Stock
S - Sale X -5,415 0 -100.00 54.34 -294,251
2020-06-17 2020-06-15 4 ACMR ACM Research, Inc.
Class A Common Stock
M - Exercise 5,415 5,415 13.85 74,998 74,998
2019-11-06 2019-11-04 4 ACMR ACM Research, Inc.
Stock Option
A - Award 20,000 20,000
P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award, or other acquisition of securities from the company (such as an option)
C
Conversion of derivative
D
Sale or transfer of securities back to the company
F
Payment of exercise price or tax liability using portion of securities received from the company
G
Gift of securities by or to the insider
K
Equity swaps and similar hedging transactions
M
Exercise or conversion of derivative security received from the company (such as an option)
V
A transaction voluntarily reported on Form 4
J
Other (accompanied by a footnote describing the transaction)