Introduction

This page provides a comprehensive analysis of the known insider trading history of Thomas N Tryforos. 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 Thomas N Tryforos has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:CACC / Credit Acceptance Corporation Director 1,275
US:CPRT / Copart, Inc. Director 0
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Thomas N Tryforos. 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 Thomas N Tryforos 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
2025-06-06 2025-06-04 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
A - Award 410 1,275 47.40
2024-12-09 2024-12-05 4 CPRT COPART INC
Common Stock
G - Gift -7,850 0 -100.00
2024-12-09 2024-12-05 4 CPRT COPART INC
Common Stock
S - Sale -83,310 7,850 -91.39 61.86 -5,153,557 485,601
2024-12-09 2024-12-05 4 CPRT COPART INC
Common Stock
M - Exercise 91,160 91,160 4.91 447,596 447,596
2024-09-06 2024-09-04 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
A - Award 442 865 104.49
2024-06-13 2024-06-11 4 CPRT COPART INC
Common Stock
G - Gift -188 441,635 -0.04
2024-03-15 2024-03-14 4 CPRT COPART INC
Common Stock
G - Gift -33,651 1,349 -96.15
2024-03-15 2024-03-13 4 CPRT COPART INC
Common Stock
S - Sale -285,000 35,000 -89.06 55.27 -15,751,950 1,934,450
2024-03-15 2024-03-13 4 CPRT COPART INC
Common Stock
M - Exercise 320,000 320,000 4.55 1,456,000 1,456,000
2023-08-24 2023-08-22 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
A - Award 423 423
2023-05-23 2023-05-19 4 CPRT COPART INC
Common Stock
S - Sale -143,100 16,900 -89.44 88.39 -12,648,609 1,493,791
2023-05-23 2023-05-19 4 CPRT COPART INC
Common Stock
M - Exercise 160,000 160,000 17.81 2,849,600 2,849,600
2022-06-02 2022-05-31 4 CPRT COPART INC
Common Stock
S - Sale -11,000 0 -100.00 114.72 -1,261,887
2022-06-02 2022-05-31 4 CPRT COPART INC
Common Stock
M - Exercise 11,000 11,000 12.48 137,280 137,280
2021-12-10 2021-12-09 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -100 87,470 -0.11 661.14 -66,114 57,829,916
2021-12-10 2021-12-09 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -2,254 87,570 -2.51 660.28 -1,488,271 57,820,720
2021-12-10 2021-12-08 4 CPRT COPART INC
Stock Option (right to buy)
M - Exercise -69,000 11,000 -86.25
2021-12-10 2021-12-08 4 CPRT COPART INC
Common Stock
S - Sale -69,000 0 -100.00 149.63 -10,324,463
2021-12-10 2021-12-08 4 CPRT COPART INC
Common Stock
M - Exercise 69,000 69,000 12.48 861,120 861,120
2021-12-09 2021-12-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -200 89,824 -0.22 661.63 -132,326 59,430,253
2021-12-09 2021-12-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -2,446 90,024 -2.65 660.50 -1,615,583 59,460,852
2021-12-09 2021-12-07 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -134 92,470 -0.14 663.10 -88,855 61,316,857
2021-12-09 2021-12-07 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -550 92,604 -0.59 662.24 -364,232 61,326,073
2021-12-09 2021-12-07 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -3,611 93,154 -3.73 661.57 -2,388,929 61,627,892
2021-12-09 2021-12-07 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -5,705 96,765 -5.57 660.32 -3,767,126 63,895,865
2021-12-06 2021-12-03 4 CPRT COPART INC
Stock Option (right to buy)
A - Award 15,000 15,000
2021-11-09 2021-11-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -102 102,470 -0.10 685.00 -69,870 70,191,950
2021-11-09 2021-11-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -100 102,572 -0.10 682.68 -68,268 70,023,853
2021-11-09 2021-11-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -70 102,672 -0.07 669.00 -46,830 68,687,568
2021-11-09 2021-11-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -339 102,742 -0.33 667.80 -226,384 68,611,108
2021-11-09 2021-11-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -100 103,081 -0.10 656.66 -65,666 67,689,169
2021-11-09 2021-11-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -10 103,181 -0.01 655.48 -6,555 67,633,082
2021-11-09 2021-11-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -81 103,191 -0.08 655.11 -53,064 67,601,456
2021-11-09 2021-11-08 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -198 103,272 -0.19 652.13 -129,122 67,346,769
2021-11-09 2021-11-05 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -330 103,470 -0.32 695.01 -229,353 71,912,685
2021-11-09 2021-11-05 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -100 103,800 -0.10 697.52 -69,752 72,402,576
2021-11-09 2021-11-05 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -300 103,900 -0.29 702.20 -210,660 72,958,580
2021-11-09 2021-11-05 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -500 104,200 -0.48 701.05 -350,525 73,049,410
2021-11-09 2021-11-05 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -800 104,700 -0.76 700.10 -560,080 73,300,470
2021-10-22 2021-10-20 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
J - Other 105,500 105,500
2021-10-22 2021-10-20 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
J - Other 105,500 105,500
2021-10-22 2021-10-20 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
J - Other -105,500 0 -100.00
2021-10-22 2021-10-20 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
J - Other -105,500 0 -100.00
2021-01-29 2020-12-30 5 CACC CREDIT ACCEPTANCE CORP
Common Stock
G - Gift -750 207,665 -0.36
2021-01-29 2020-12-17 5 CACC CREDIT ACCEPTANCE CORP
Common Stock
G - Gift -1,490 208,415 -0.71
2021-01-29 2020-12-10 5 CACC CREDIT ACCEPTANCE CORP
Common Stock
G - Gift -2,000 209,905 -0.94
2020-12-08 2020-12-04 4 CPRT COPART INC
Common Stock
A - Award 25,000 25,000
2020-01-16 2020-01-14 4 CPRT COPART INC
Common Stock
S - Sale -49,877 181,344 -21.57 96.46 -4,811,225 17,492,769
2020-01-14 2020-01-13 4 CPRT COPART INC
Common Stock
S - Sale -81,467 231,221 -26.05 95.84 -7,807,585 22,159,619
2020-01-14 2020-01-10 4 CPRT COPART INC
Common Stock
S - Sale -50,000 312,688 -13.79 95.33 -4,766,285 29,807,202
2019-12-10 2019-12-06 4 CPRT COPART INC
Stock Option
A - Award 25,000 25,000
2019-02-14 2018-08-03 5 CACC CREDIT ACCEPTANCE CORP
Common Stock
G - Gift -14,595 422,905 -3.34
2018-12-19 2018-12-17 4 CPRT COPART INC
Stock Option
A - Award 25,000 25,000
2018-08-06 2018-08-03 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,300 437,500 -0.30 440.69 -572,897 192,801,875
2018-08-06 2018-08-03 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,800 438,800 -0.41 439.84 -791,712 193,001,792
2018-08-06 2018-08-03 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -100 440,600 -0.02 439.18 -43,918 193,502,708
2018-08-06 2018-08-03 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -100 440,700 -0.02 439.00 -43,900 193,467,300
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -500 440,800 -0.11 448.99 -224,495 197,914,792
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -400 441,300 -0.09 447.29 -178,916 197,389,077
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -500 441,700 -0.11 445.67 -222,835 196,852,439
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,000 442,200 -0.23 444.48 -444,480 196,549,056
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,825 443,200 -0.41 443.77 -809,880 196,678,864
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,182 445,025 -0.26 442.36 -522,870 196,861,259
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -2,743 446,207 -0.61 441.41 -1,210,788 196,960,232
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,050 448,950 -0.23 440.59 -462,620 197,802,880
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,583 450,000 -0.35 439.26 -695,349 197,667,000
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -3,839 451,583 -0.84 438.52 -1,683,478 198,028,177
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -3,576 455,422 -0.78 437.41 -1,564,178 199,206,137
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -2,132 458,998 -0.46 436.42 -930,447 200,315,907
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -3,180 461,130 -0.68 435.45 -1,384,731 200,799,058
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,250 464,310 -0.27 434.37 -542,962 201,682,335
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -440 465,560 -0.09 433.22 -190,617 201,689,903
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,646 466,000 -0.35 431.94 -710,973 201,284,040
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,505 467,646 -0.32 430.92 -648,535 201,518,014
2018-08-06 2018-08-02 4 CACC CREDIT ACCEPTANCE CORP
Common Stock
S - Sale -1,649 469,151 -0.35 430.16 -709,334 201,809,994
2018-06-13 2018-06-12 4 CPRT COPART INC
Common Stock
S - Sale -30,000 362,688 -7.64 57.52 -1,725,657 20,862,503
2018-06-13 2018-06-11 4 CPRT COPART INC
Common Stock
S - Sale -110,000 392,688 -21.88 57.50 -6,325,363 22,580,856
2017-12-12 2017-12-08 4 CPRT COPART INC
Stock Option
A - Award 40,000 40,000
2016-12-20 2016-12-16 4 CPRT COPART INC
Stock Option
A - Award 40,000 40,000
2015-12-04 2015-12-02 4 CPRT COPART INC
Stock Option
A - Award 40,000 40,000
2014-12-04 2014-12-03 4 CPRT COPART INC
Stock Option
A - Award 40,000 40,000
2013-12-18 2013-12-16 4 CPRT COPART INC
Stock Option (right to buy)
A - Award 40,000 40,000
2012-06-08 2012-06-05 4 CPRT COPART INC
Stock Option (right to buy)
A - Award 40,000 40,000
2012-06-08 3 CPRT COPART INC
Common Stock
251,344
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)