Introduction

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

Security Title Latest Reported Holdings
US:QS / QuantumScape Corporation Director 161,343
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Fritz Prinz. 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 Fritz Prinz 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
2025-07-25 2025-07-25 4 QS QuantumScape Corp
Class A Common Stock
S - Sale -70,187 161,343 -30.31 11.62 -815,397 1,874,402
2025-07-25 2025-07-25 4 QS QuantumScape Corp
Class A Common Stock
S - Sale -200,000 0 -100.00 11.62 -2,323,500
2025-07-25 2025-07-25 4 QS QuantumScape Corp
Class A Common Stock
S - Sale -200,000 0 -100.00 11.62 -2,323,500
2025-07-25 2025-07-25 4 QS QuantumScape Corp
Class A Common Stock
S - Sale -529,813 0 -100.00 11.62 -6,155,103
2025-07-25 2025-07-25 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 118,636 200,000 145.81
2025-07-25 2025-07-25 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 118,636 200,000 145.81
2025-07-25 2025-07-25 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 260,739 529,813 96.90
2025-07-08 2025-07-03 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -177,938 81,364 -68.62 7.02 -1,249,552 571,371
2025-07-08 2025-07-03 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -177,938 81,364 -68.62 7.02 -1,249,552 571,371
2025-07-08 2025-07-03 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -508,832 269,074 -65.41 7.02 -3,573,222 1,889,545
2025-05-23 2025-05-22 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -61,523 231,530 -20.99 3.94 -242,228 911,580
2025-05-15 2025-05-13 4 QS QuantumScape Corp
Class A Common Stock
A - Award 64,766 293,053 28.37
2025-02-21 2025-02-21 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -12,908 228,287 -5.35 5.22 -67,437 1,192,663
2024-11-22 2024-11-21 4 QS QuantumScape Corp
Common Stock
S - Sale X -12,908 241,195 -5.08 5.04 -65,085 1,216,153
2024-08-23 2024-08-21 4 QS QuantumScape Corp
Common Stock
S - Sale X -12,908 254,103 -4.83 5.96 -76,929 1,514,403
2024-07-03 2024-07-01 4 QS QuantumScape Corp
Common Stock
S - Sale X -25,816 267,011 -8.82 4.87 -125,711 1,300,210
2024-04-10 2024-04-05 4 QS QuantumScape Corp
Common Stock
A - Award 34,663 292,827 13.43
2023-04-07 2023-04-06 4 QS QuantumScape Corp
Class A Common Stock
A - Award 30,201 258,164 13.25
2023-01-26 2023-01-24 4 QS QuantumScape Corp
Class A Common Stock
A - Award 227,963 227,963
2022-08-17 2022-08-16 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -8,180 259,302 -3.06 12.84 -105,036 3,329,593
2022-08-17 2022-08-16 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -8,180 259,302 -3.06 12.84 -105,036 3,329,593
2022-08-17 2022-08-16 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -24,539 777,906 -3.06 12.84 -315,093 9,988,702
2022-08-17 2022-08-15 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -54,060 267,482 -16.81 13.30 -718,803 3,556,548
2022-08-17 2022-08-15 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -54,060 267,482 -16.81 13.30 -718,803 3,556,548
2022-08-17 2022-08-15 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -162,181 802,445 -16.81 13.30 -2,156,440 10,669,710
2022-06-10 2022-06-09 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 289,382 321,542 899.82
2022-06-10 2022-06-09 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 289,382 321,542 899.82
2022-06-10 2022-06-09 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 818,146 964,626 558.54
2022-06-10 2022-06-08 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,120 32,160 -49.18 12.02 -373,978 386,476
2022-06-10 2022-06-08 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,120 32,160 -49.18 12.02 -373,978 386,476
2022-06-10 2022-06-08 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -93,360 146,480 -38.93 12.02 -1,121,935 1,760,294
2022-05-27 2022-05-25 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,120 63,280 -32.97 11.04 -343,515 698,510
2022-05-27 2022-05-25 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,120 63,280 -32.97 11.04 -343,515 698,510
2022-05-27 2022-05-25 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -93,360 239,840 -28.02 11.04 -1,030,545 2,647,450
2022-04-12 2022-04-08 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,120 94,400 -24.79 18.24 -567,638 1,721,884
2022-04-12 2022-04-08 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,120 94,400 -24.79 18.24 -567,638 1,721,884
2022-04-12 2022-04-08 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -93,960 333,200 -22.00 18.24 -1,713,859 6,077,668
2022-03-23 2022-03-21 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,120 125,520 -19.87 16.84 -524,030 2,113,631
2022-03-23 2022-03-21 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,120 125,520 -19.87 16.84 -524,033 2,113,644
2022-03-23 2022-03-21 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -93,960 426,560 -18.05 16.84 -1,582,202 7,182,886
2022-02-03 2022-02-01 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -14,964 156,640 -8.72 17.35 -259,688 2,718,362
2022-02-03 2022-02-01 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -16,156 171,604 -8.60 16.72 -270,191 2,869,888
2022-02-03 2022-02-01 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -14,962 156,640 -8.72 17.35 -259,652 2,718,346
2022-02-03 2022-02-01 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -16,158 171,602 -8.61 16.72 -270,225 2,869,855
2022-02-03 2022-02-01 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -44,756 519,920 -7.93 17.35 -776,705 9,022,796
2022-02-03 2022-02-01 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -48,604 564,676 -7.93 16.72 -812,882 9,443,980
2022-01-14 2022-01-12 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -350 187,760 -0.19 21.69 -7,590 4,071,594
2022-01-14 2022-01-12 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -30,770 188,110 -14.06 21.07 -648,432 3,964,136
2022-01-14 2022-01-12 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -350 187,760 -0.19 21.69 -7,590 4,071,613
2022-01-14 2022-01-12 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -30,770 188,110 -14.06 21.07 -648,435 3,964,155
2022-01-14 2022-01-12 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -1,000 613,280 -0.16 21.70 -21,695 13,305,355
2022-01-14 2022-01-12 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -92,360 614,280 -13.07 21.07 -1,946,385 12,945,275
2021-12-29 2021-12-27 4 QS QuantumScape Corp
Class A Common Stock
G - Gift -200,000 706,640 -22.06
2021-12-09 2021-12-07 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -100 218,880 -0.05 26.66 -2,666 5,835,341
2021-12-09 2021-12-07 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -100 218,880 -0.05 26.66 -2,666 5,835,341
2021-12-09 2021-12-07 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,020 218,980 -12.41 26.23 -813,726 5,744,349
2021-12-09 2021-12-07 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -31,020 218,980 -12.41 26.23 -813,726 5,744,349
2021-12-09 2021-12-07 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -150 906,640 -0.02 26.68 -4,002 24,186,163
2021-12-09 2021-12-07 4 QS QuantumScape Corp
Class A Common Stock
S - Sale X -93,210 906,790 -9.32 26.23 -2,444,992 23,786,008
2021-09-17 2021-09-15 4 QS QuantumScape Corp
Class B Common Stock
C - Conversion -1,000,000 6,890,327 -12.67
2021-09-17 2021-09-15 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 1,000,000 1,000,000
2021-08-03 2021-08-02 4 QS QuantumScape Corp
Class A Common Stock
S - Sale -84,029 0 -100.00 23.38 -1,964,573
2021-08-03 2021-08-02 4 QS QuantumScape Corp
Class A Common Stock
S - Sale -215,971 84,029 -71.99 22.49 -4,857,879 1,890,081
2021-08-03 2021-07-30 4 QS QuantumScape Corp
Class A Common Stock
S - Sale -200,000 300,000 -40.00 22.61 -4,522,180 6,783,270
2021-07-26 2021-07-22 4 QS QuantumScape Corp
Class B Common Stock
C - Conversion -250,000 1,090,582 -18.65
2021-07-26 2021-07-22 4 QS QuantumScape Corp
Class B Common Stock
C - Conversion -250,000 1,090,582 -18.65
2021-07-26 2021-07-22 4 QS QuantumScape Corp
Class B Common Stock
C - Conversion -500,000 7,890,327 -5.96
2021-07-26 2021-07-22 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 250,000 250,000
2021-07-26 2021-07-22 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 250,000 250,000
2021-07-26 2021-07-22 4 QS QuantumScape Corp
Class A Common Stock
C - Conversion 500,000 500,000
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)