Introduction

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

Security Title Latest Reported Holdings
US:GRMN / Garmin Ltd. Managing Director, EMEA 7,588
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Sean Biddlecombe. 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 Sean Biddlecombe 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
2025-02-27 2025-02-25 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -689 7,588 -8.32 226.04 -155,742 1,715,192
2025-02-21 2025-02-19 4 GRMN GARMIN LTD
Registered Shares
A - Award 2,016 8,277 32.20
2025-01-31 2023-02-25 4/A GRMN GARMIN LTD
Registered Shares
F - Taxes -458 5,672 -7.47 98.30 -45,021 557,558
2025-01-31 2023-02-24 4/A GRMN GARMIN LTD
Registered Shares
S - Sale -867 6,130 -12.39 98.71 -85,582 605,095
2024-12-17 2024-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 714 6,280 12.83
2024-12-17 2024-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -581 5,566 -9.45 215.40 -125,147 1,198,916
2024-11-07 2024-11-07 4 GRMN GARMIN LTD
Registered Shares
S - Sale -587 6,147 -8.72 210.10 -123,328 1,291,472
2024-03-07 2024-03-07 4 GRMN GARMIN LTD
Registered Shares
S - Sale -632 6,734 -8.58 140.13 -88,563 943,649
2024-02-27 2024-02-25 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -562 7,366 -7.09 135.51 -76,157 998,167
2024-02-23 2024-02-21 4 GRMN GARMIN LTD
Registered Shares
A - Award 2,376 7,928 42.80
2023-12-19 2023-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,242 5,552 28.82
2023-12-19 2023-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -524 4,310 -10.84 126.13 -66,092 543,620
2023-08-07 2023-08-04 4 GRMN GARMIN LTD
Registered Shares
S - Sale -857 4,834 -15.06 106.02 -90,859 512,498
2023-02-28 2023-02-25 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -439 5,691 -7.16 98.30 -43,154 559,425
2023-02-28 2023-02-24 4 GRMN GARMIN LTD
Registered Shares
S - Sale -867 6,130 -12.39 98.71 -85,582 605,095
2022-12-19 2022-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,719 6,997 32.57
2022-12-19 2022-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -423 5,278 -7.42 92.72 -39,221 489,376
2022-03-01 2022-02-25 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -656 5,701 -10.32 111.83 -73,360 637,543
2022-02-18 2022-02-16 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,206 6,357 23.41
2021-12-17 2021-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 738 5,151 16.72
2021-12-17 2021-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -500 4,413 -10.18 135.43 -67,715 597,653
2021-08-04 2021-08-04 4 GRMN GARMIN LTD
Registered Shares
S - Sale -405 4,913 -7.62 161.14 -65,260 791,660
2021-05-03 2021-04-30 4 GRMN GARMIN LTD
Registered Shares
S - Sale -1,079 5,318 -16.87 137.56 -148,423 731,523
2021-03-05 2013-08-22 4/A GRMN GARMIN LTD
Registered Shares
S - Sale -3,049 9,239 -24.81 40.44 -123,302 373,625
2021-03-05 2013-08-22 4/A GRMN GARMIN LTD
Registered Shares
F - Taxes -3,246 12,288 -20.90 40.44 -131,268 496,927
2021-03-01 2021-02-25 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -746 9,389 -7.36 124.34 -92,758 1,167,428
2021-02-19 2021-02-17 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,715 10,135 20.37
2020-12-17 2020-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 876 8,420 11.61
2020-12-17 2020-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -578 7,544 -7.12 119.19 -68,892 899,169
2020-08-14 2020-08-13 4 GRMN GARMIN LTD
Registered Shares
S - Sale -1,450 8,122 -15.15 103.26 -149,721 838,642
2020-02-27 2020-02-25 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -636 9,572 -6.23 92.00 -58,512 880,624
2020-02-27 2020-02-25 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,257 10,208 14.04
2020-02-25 2020-02-21 4 GRMN GARMIN LTD
Registered Shares
S - Sale -652 8,951 -6.79 99.33 -64,763 889,103
2019-12-17 2019-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,074 9,603 12.59
2019-12-17 2019-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -582 8,529 -6.39 97.43 -56,704 830,980
2019-08-26 2019-08-22 4 GRMN GARMIN LTD
Registered Shares
S - Sale -316 9,111 -3.35 80.39 -25,403 732,433
2019-02-26 2019-02-25 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -654 9,427 -6.49 83.55 -54,642 787,626
2019-02-26 2019-02-25 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,776 10,081 21.38
2019-02-26 2019-02-22 4 GRMN GARMIN LTD
Registered Shares
S - Sale -1,500 8,305 -15.30 83.51 -125,266 693,558
2018-12-18 2018-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,227 9,805 14.30
2018-12-18 2018-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -622 8,578 -6.76 65.14 -40,517 558,771
2018-08-06 2018-08-03 4 GRMN GARMIN LTD
Registered Shares
S - Sale -745 9,200 -7.49 64.88 -48,337 596,914
2018-08-06 2018-08-03 4 GRMN GARMIN LTD
Registered Shares
S - Sale -563 9,945 -5.36 64.89 -36,534 645,341
2018-02-27 2018-02-25 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -377 10,508 -3.46 60.35 -22,752 634,158
2018-02-27 2018-02-25 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,020 10,885 10.34
2017-12-19 2017-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,377 9,865 16.22
2017-12-19 2017-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -554 8,488 -6.13 58.36 -32,331 495,360
2017-12-14 2017-12-13 4 GRMN GARMIN LTD
Registered Shares
S - Sale -755 9,042 -7.71 60.80 -45,904 549,754
2017-08-04 2017-08-04 4 GRMN GARMIN LTD
Registered Shares
S - Sale -1,697 9,797 -14.76 51.83 -87,956 507,779
2017-03-01 2017-02-25 4 GRMN GARMIN LTD
Restricted Shares
F - Taxes -217 11,494 -1.85 53.03 -11,508 609,527
2017-03-01 2017-02-25 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,377 11,711 13.32
2016-12-16 2016-12-15 4 GRMN GARMIN LTD
Resticted Shares
A - Award 1,098 10,334 11.89
2016-12-16 2016-12-15 4 GRMN GARMIN LTD
Restricted Shares
F - Taxes -379 9,236 -3.94 49.42 -18,730 456,443
2016-12-16 2016-12-14 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -125 9,615 -1.28 49.75 -6,219 478,346
2016-12-13 2016-12-10 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -192 9,740 -1.93 50.50 -9,696 491,870
2016-08-19 2016-08-17 4 GRMN GARMIN LTD
Registered Shares
S - Sale -425 9,932 -4.10 54.52 -23,171 541,493
2015-12-16 2015-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,485 10,357 16.74
2015-12-16 2015-12-15 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -147 8,872 -1.63 35.38 -5,201 313,891
2015-12-16 2015-12-14 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -125 9,019 -1.37 34.88 -4,360 314,583
2015-12-11 2015-12-10 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -548 9,144 -5.65 37.31 -20,446 341,163
2014-12-17 2014-12-15 4 GRMN GARMIN LTD
Registered Shares
A - Award 942 9,960 10.45
2014-11-20 2014-11-19 4 GRMN GARMIN LTD
Registered Shares
S - Sale -2,053 9,839 -17.26 58.38 -119,854 574,401
2014-02-21 2014-02-21 4 GRMN GARMIN LTD
Stock-settled stock appreciation right
M - Exercise -5,000 0 -100.00
2014-02-21 2014-02-21 4 GRMN GARMIN LTD
Stock-settled stock appreciation right
M - Exercise -5,000 0 -100.00
2014-02-21 2014-02-21 4 GRMN GARMIN LTD
Stock-settled stock appreciation right
M - Exercise -6,000 0 -100.00
2014-02-21 2014-02-21 4 GRMN GARMIN LTD
Registered Shares
S - Sale -827 11,441 -6.74 51.91 -42,930 593,902
2014-02-21 2014-02-21 4 GRMN GARMIN LTD
Registered Shares
S - Sale -1,290 12,268 -9.51 51.82 -66,848 635,728
2014-02-21 2014-02-21 4 GRMN GARMIN LTD
Registered Shares
M - Exercise 87 13,558 0.65
2014-02-21 2014-02-21 4 GRMN GARMIN LTD
Registered Shares
M - Exercise 78 13,471 0.58
2014-02-21 2014-02-21 4 GRMN GARMIN LTD
Registered Shares
M - Exercise 662 13,393 5.20
2013-12-16 2013-12-14 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -125 12,731 -0.97 47.05 -5,881 598,994
2013-12-16 2013-12-12 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -352 12,856 -2.67 47.51 -16,724 610,789
2013-12-12 2013-12-11 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -148 13,208 -1.11 48.64 -7,199 642,437
2013-12-12 2013-12-10 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -356 13,356 -2.60 49.07 -17,469 655,379
2013-12-12 2013-12-10 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,227 13,712 9.83
2013-08-23 2013-08-22 4 GRMN GARMIN LTD
Stock Appreciation Right
M - Exercise -4,300 0 -100.00
2013-08-23 2013-08-22 4 GRMN GARMIN LTD
Employee stock option (right to buy)
M - Exercise -388 0 -100.00
2013-08-23 2013-08-22 4 GRMN GARMIN LTD
Registered Shares
S - Sale -1,995 12,485 -13.78 40.44 -80,678 504,893
2013-08-23 2013-08-22 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -1,054 14,480 -6.79 40.44 -42,624 585,571
2013-08-23 2013-08-22 4 GRMN GARMIN LTD
Registered Shares
M - Exercise 4,300 15,534 38.28 30.66 131,838 476,272
2013-08-23 2013-08-22 4 GRMN GARMIN LTD
Registered Shares
M - Exercise 388 11,234 3.58 27.13 10,526 304,778
2012-12-21 2012-12-20 4 GRMN GARMIN LTD
Employee stock option (right to buy)
M - Exercise -5,400 0 -100.00
2012-12-21 2012-12-20 4 GRMN GARMIN LTD
Employee stock option (right to buy)
M - Exercise -3,618 0 -100.00
2012-12-21 2012-12-20 4 GRMN GARMIN LTD
Registered Shares
S - Sale -9,018 10,105 -47.16 41.74 -376,384 421,752
2012-12-21 2012-12-20 4 GRMN GARMIN LTD
Registered Shares
M - Exercise 5,400 19,123 39.35 19.94 107,676 381,313
2012-12-21 2012-12-20 4 GRMN GARMIN LTD
Registered Shares
M - Exercise 3,618 13,723 35.80 27.27 98,663 374,226
2012-12-11 2012-12-10 4 GRMN GARMIN LTD
Registered Shares
F - Taxes -173 10,798 -1.58 41.82 -7,235 451,572
2012-12-11 2012-12-10 4 GRMN GARMIN LTD
Registered Shares
A - Award 1,281 10,971 13.22
2012-03-20 2012-03-20 4 GRMN GARMIN LTD
Common Shares
S - Sale -1,217 9,225 -11.65 46.95 -57,134 433,081
2012-03-20 2012-03-16 4 GRMN GARMIN LTD
Stock Option (right to buy)
M - Exercise -1,200 0 -100.00
2012-03-20 2012-03-16 4 GRMN GARMIN LTD
Stock Appreciation Right
M - Exercise -4,700 0 -100.00
2012-03-20 2012-03-16 4 GRMN GARMIN LTD
Common Shares
S - Sale -1,200 10,442 -10.31 46.73 -56,076 487,955
2012-03-20 2012-03-16 4 GRMN GARMIN LTD
Common Shares
M - Exercise 1,200 11,642 11.49 14.90 17,880 173,466
2012-03-20 2012-03-16 4 GRMN GARMIN LTD
Common Shares
F - Taxes -1,318 10,442 -11.21 46.88 -61,788 489,521
2012-03-20 2012-03-16 4 GRMN GARMIN LTD
Common Shares
D - Sale to Issuer -2,165 11,760 -15.55 46.88 -101,495 551,309
2012-03-20 2012-03-16 4 GRMN GARMIN LTD
Common Shares
M - Exercise 4,700 13,925 50.95 21.59 101,473 300,641
2010-02-12 3 GRMN GARMIN LTD
Common Shares
6,630
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)