Introduction

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

Security Title Latest Reported Holdings
US:DXCM / DexCom, Inc. EVP, Chief Operating Officer 313,497
US:SNES / SenesTech, Inc. Director 150,000
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Jacob Steven Leach. 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 Jacob Steven Leach 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
2025-03-14 2025-03-12 4 DXCM DEXCOM INC
Common Stock
S - Sale -14,076 313,497 -4.30 70.38 -990,670 22,063,950
2025-03-11 2025-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 22,798 327,573 7.48
2025-03-11 2025-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 35,906 304,775 13.35
2025-01-30 2025-01-29 4 DXCM DEXCOM INC
Common Stock
S - Sale -2,634 268,644 -0.97 86.91 -228,932 23,348,978
2025-01-30 2025-01-28 4 DXCM DEXCOM INC
Common Stock
A - Award 7,107 271,278 2.69
2024-12-17 2024-12-16 4 DXCM DEXCOM INC
Common Stock
S - Sale -744 264,171 -0.28 76.87 -57,191 20,306,825
2024-09-11 2024-09-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -746 264,915 -0.28 69.15 -51,586 18,318,872
2024-06-11 2024-06-10 4 DXCM DEXCOM INC
Common Stock
S - Sale -745 265,577 -0.28 115.05 -85,713 30,554,846
2024-03-14 2024-03-12 4 DXCM DEXCOM INC
Common Stock
G - Gift -7,736 266,177 -2.82
2024-03-14 2024-03-12 4 DXCM DEXCOM INC
Common Stock
S - Sale -14,639 273,913 -5.07 134.41 -1,967,638 36,816,838
2024-03-11 2024-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 26,053 288,552 9.92
2024-01-17 2024-01-16 4 DXCM DEXCOM INC
Common Stock
S - Sale -3,978 262,499 -1.49 123.63 -491,819 32,454,011
2024-01-17 2024-01-12 4 DXCM DEXCOM INC
Common Stock
A - Award 9,697 266,477 3.78 0.00 10 266
2023-12-19 2023-12-18 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -2,932 256,780 -1.13 121.85 -357,266 31,288,771
2023-04-20 2023-04-20 4 DXCM DEXCOM INC
Common Stock
S - Sale X -30,764 259,613 -10.59 125.00 -3,845,500 32,451,625
2023-03-14 2023-03-10 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -4,583 290,377 -1.55 111.40 -510,542 32,347,707
2023-03-14 2023-03-10 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -7,986 294,960 -2.64 111.40 -889,632 32,858,249
2023-03-14 2023-03-10 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -3,540 302,946 -1.16 111.40 -394,352 33,747,881
2023-03-10 2023-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 25,397 306,486 9.04 0.00 25 306
2023-03-06 2023-03-06 4 DXCM DEXCOM INC
Common Stock
S - Sale X -7,719 281,089 -2.67 115.13 -888,706 32,362,423
2023-03-06 2023-03-06 4 DXCM DEXCOM INC
Common Stock
S - Sale X -10,425 288,808 -3.48 114.45 -1,193,116 33,053,382
2022-03-10 2022-03-09 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -891 74,746 -1.18 406.06 -361,797 30,351,114
2022-03-10 2022-03-09 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -2,065 75,637 -2.66 406.06 -838,507 30,712,911
2022-03-10 2022-03-09 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -1,317 77,702 -1.67 406.06 -534,777 31,551,418
2022-03-10 2022-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 6,741 79,019 9.33 0.00 7 79
2021-12-17 2021-12-15 4 DXCM DEXCOM INC
Common Stock
A - Award 2,925 72,247 4.22 0.00 3 72
2021-09-13 2021-09-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -15 69,322 -0.02 542.03 -8,130 37,574,465
2021-09-13 2021-09-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -1,248 69,337 -1.77 541.36 -675,617 37,536,278
2021-08-18 2021-08-18 4 SNES SenesTech, Inc.
Common Stock
P - Purchase 50,000 150,000 50.00 1.54 77,095 231,285
2021-08-18 2021-08-17 4 SNES SenesTech, Inc.
Common Stock
P - Purchase 50,000 100,000 100.00 1.50 74,785 149,570
2021-08-18 2021-08-16 4 SNES SenesTech, Inc.
Common Stock
P - Purchase 50,000 50,000 1.54 76,885 76,885
2021-08-02 2021-07-30 4 DXCM DEXCOM INC
Common Stock
S - Sale X -12,087 70,554 -14.63 476.70 -5,761,873 33,633,092
2021-06-29 2021-06-25 4 SNES SenesTech, Inc.
Stock Option (right to buy)
A - Award 33,762 72,800 86.48 0.95 32,000 69,000
2021-06-29 2021-06-25 4 SNES SenesTech, Inc.
Stock Option (right to buy)
A - Award 39,038 39,038
2021-06-10 2021-06-09 4 DXCM DEXCOM INC
Common Stock
S - Sale X -22,755 82,641 -21.59 395.00 -8,988,225 32,643,195
2021-03-12 2021-03-10 4 DXCM DEXCOM INC
Common Stock
S - Sale -5,353 105,396 -4.83 362.92 -1,942,695 38,250,000
2021-03-10 2021-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 7,171 110,749 6.92 0.00 7 111
2020-11-25 2020-11-05 4 SNES SenesTech, Inc.
Stock Option (right to buy)
A - Award 27,046 27,046
2020-09-11 2020-09-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -1,283 103,548 -1.22 398.30 -511,021 41,243,375
2020-09-11 2020-09-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -2,577 104,831 -2.40 398.30 -1,026,424 41,754,397
2020-06-15 2020-06-11 4 DXCM DEXCOM INC
Common Stock
S - Sale X -100 107,369 -0.09 380.06 -38,006 40,806,125
2020-06-15 2020-06-11 4 DXCM DEXCOM INC
Common Stock
S - Sale X -1,982 107,469 -1.81 379.42 -752,004 40,775,533
2020-06-15 2020-06-11 4 DXCM DEXCOM INC
Common Stock
S - Sale X -7,466 109,451 -6.39 377.98 -2,822,016 41,370,541
2020-06-15 2020-06-11 4 DXCM DEXCOM INC
Common Stock
S - Sale X -3,481 116,917 -2.89 376.78 -1,311,558 44,051,555
2020-06-15 2020-06-11 4 DXCM DEXCOM INC
Common Stock
S - Sale X -1,800 120,398 -1.47 375.68 -676,228 45,231,398
2020-06-15 2020-06-11 4 DXCM DEXCOM INC
Common Stock
S - Sale X -2,600 122,198 -2.08 374.30 -973,169 45,738,198
2020-06-15 2020-06-11 4 DXCM DEXCOM INC
Common Stock
S - Sale X -1,700 124,798 -1.34 372.97 -634,048 46,545,823
2020-03-13 2020-03-12 4 DXCM DEXCOM INC
Common Stock
G - Gift -1,000 126,498 -0.78
2020-03-13 2020-03-11 4 DXCM DEXCOM INC
Common Stock
S - Sale -6,633 127,498 -4.95 265.43 -1,760,571 33,841,284
2020-03-13 2020-03-11 4 DXCM DEXCOM INC
Common Stock
S - Sale -84 134,131 -0.06 250.20 -21,017 33,559,952
2020-03-13 2020-03-11 4 DXCM DEXCOM INC
Common Stock
S - Sale -192 134,215 -0.14 245.67 -47,169 32,972,666
2020-03-10 2020-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 11,748 134,407 9.58 0.00 12 134
2020-02-19 2020-02-18 4 DXCM DEXCOM INC
Incentive Stock Option (right to buy)
M - Exercise -11,458 0 -100.00
2020-02-19 2020-02-18 4 DXCM DEXCOM INC
Common Stock
M - Exercise 11,458 122,563 10.31 9.78 112,059 1,198,666
2019-09-11 2019-09-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -4,455 111,105 -3.86 150.11 -668,745 16,678,094
2019-09-11 2019-09-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -257 115,560 -0.22 145.42 -37,373 16,804,885
2019-06-14 2019-06-13 4 DXCM DEXCOM INC
Common Stock
S - Sale X -600 115,781 -0.52 146.29 -87,776 16,937,985
2019-06-14 2019-06-13 4 DXCM DEXCOM INC
Common Stock
S - Sale X -4,499 116,381 -3.72 145.19 -653,232 16,897,928
2019-04-25 2019-04-24 4 DXCM DEXCOM INC
Incentive Stock Option (right to buy)
M - Exercise -4,797 0 -100.00
2019-04-25 2019-04-24 4 DXCM DEXCOM INC
Common Stock
M - Exercise 4,797 120,880 4.13 7.27 34,874 878,798
2019-03-13 2019-03-12 4 DXCM DEXCOM INC
Common Stock
S - Sale -1,676 116,083 -1.42 142.79 -239,320 16,575,747
2019-03-13 2019-03-12 4 DXCM DEXCOM INC
Common Stock
S - Sale -1,878 117,759 -1.57 142.79 -268,164 16,815,067
2019-03-13 2019-03-12 4 DXCM DEXCOM INC
Common Stock
S - Sale -5,001 119,637 -4.01 142.79 -714,104 17,083,230
2019-03-11 2019-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 14,987 124,638 13.67 0.00 15 125
2018-10-01 2018-09-28 4 DXCM DEXCOM INC
Common Stock
S - Sale X -24,731 0 -100.00 144.42 -3,571,527
2018-10-01 2018-09-28 4 DXCM DEXCOM INC
Common Stock
S - Sale X -13,418 24,731 -35.17 143.80 -1,929,502 3,556,305
2018-10-01 2018-09-28 4 DXCM DEXCOM INC
Common Stock
S - Sale X -9,451 38,149 -19.86 142.96 -1,351,110 5,453,762
2018-09-14 2018-09-12 4 DXCM DEXCOM INC
Incentive Stock Option (right to buy)
M - Exercise -15,000 0 -100.00
2018-09-14 2018-09-12 4 DXCM DEXCOM INC
Common Stock
M - Exercise 15,000 109,284 15.91 5.92 88,800 646,961
2018-09-12 2018-09-10 4 DXCM DEXCOM INC
Common Stock
S - Sale -2,678 94,284 -2.76 143.76 -384,976 13,553,815
2018-09-12 2018-09-10 4 DXCM DEXCOM INC
Common Stock
S - Sale -1,936 96,962 -1.96 143.76 -278,310 13,938,792
2018-08-28 2018-08-24 4 DXCM DEXCOM INC
Incentive Stock Option (right to buy)
M - Exercise -10,000 15,000 -40.00
2018-08-28 2018-08-24 4 DXCM DEXCOM INC
Incentive Stock Option (right to buy)
M - Exercise -10,577 0 -100.00
2018-08-28 2018-08-24 4 DXCM DEXCOM INC
Common Stock
S - Sale -10,000 98,878 -9.18 138.32 -1,383,173 13,676,538
2018-08-28 2018-08-24 4 DXCM DEXCOM INC
Common Stock
M - Exercise 10,000 108,878 10.11 5.92 59,200 644,558
2018-08-28 2018-08-24 4 DXCM DEXCOM INC
Common Stock
S - Sale -10,577 98,878 -9.66 138.32 -1,462,982 13,676,538
2018-08-28 2018-08-24 4 DXCM DEXCOM INC
Common Stock
M - Exercise 10,577 109,455 10.70 3.19 33,741 349,161
2018-05-17 2018-05-10 4 DXCM DEXCOM INC
Common Stock
G - Gift -176 11,824 -1.47
2018-05-10 2018-05-09 4 DXCM DEXCOM INC
Non-Qualified Stock Option (right to buy)
M - Exercise -8,542 0 -100.00
2018-05-10 2018-05-09 4 DXCM DEXCOM INC
Non-Qualified Stock Option (right to buy)
M - Exercise -203 0 -100.00
2018-05-10 2018-05-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -203 98,878 -0.20 84.77 -17,209 8,382,046
2018-05-10 2018-05-09 4 DXCM DEXCOM INC
Common Stock
M - Exercise 203 99,081 0.21 7.27 1,476 720,319
2018-05-10 2018-05-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -8,542 98,878 -7.95 84.77 -724,119 8,382,046
2018-05-10 2018-05-09 4 DXCM DEXCOM INC
Common Stock
M - Exercise 8,542 107,420 8.64 9.78 83,541 1,050,568
2018-05-10 2018-05-08 4 DXCM DEXCOM INC
Non-Qualified Stock Option (right to buy)
M - Exercise -1,923 0 -100.00
2018-05-10 2018-05-08 4 DXCM DEXCOM INC
Common Stock
S - Sale -2,500 47,600 -4.99 85.15 -212,874 4,053,116
2018-05-10 2018-05-08 4 DXCM DEXCOM INC
Common Stock
S - Sale -1,923 98,878 -1.91 84.95 -163,366 8,400,042
2018-05-10 2018-05-08 4 DXCM DEXCOM INC
Common Stock
M - Exercise 1,923 100,801 1.94 3.19 6,134 321,555
2018-03-14 2018-03-12 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -2,406 98,878 -2.38 60.73 -146,118 6,004,920
2018-03-14 2018-03-12 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -1,871 101,284 -1.81 60.73 -113,627 6,151,038
2018-03-14 2018-03-12 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -3,176 103,155 -2.99 60.73 -192,880 6,264,665
2018-03-12 2018-03-08 4 DXCM DEXCOM INC
Common Stock
A - Award 30,093 106,331 39.47 0.00 30 106
2017-09-13 2017-09-11 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -2,819 75,919 -3.58 71.81 -202,442 5,452,002
2017-09-13 2017-09-11 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -3,523 78,738 -4.28 71.81 -252,999 5,654,443
2017-03-15 2017-03-14 4 DXCM DEXCOM INC
Common Stock
S - Sale -3,050 82,155 -3.58 77.32 -235,824 6,352,184
2017-03-15 2017-03-13 4 DXCM DEXCOM INC
Common Stock
S - Sale -2,732 85,205 -3.11 77.78 -212,485 6,626,938
2017-03-15 2017-03-13 4 DXCM DEXCOM INC
Common Stock
S - Sale -5,194 87,937 -5.58 78.07 -405,506 6,865,417
2017-03-15 2017-03-10 4 DXCM DEXCOM INC
Incentive Stock Option (right to buy)
M - Exercise -7,500 0 -100.00 7.63 -57,225
2017-03-15 2017-03-10 4 DXCM DEXCOM INC
Common Stock
M - Exercise 7,500 93,131 8.76 7.63 57,225 710,590
2017-03-15 2017-03-10 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -2,538 85,631 -2.88 77.55 -196,823 6,640,735
2017-03-15 2017-03-10 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -5,473 88,169 -5.84 77.55 -424,434 6,837,559
2017-03-15 2017-03-10 4 DXCM DEXCOM INC
Common Stock
D - Sale to Issuer -1,950 93,642 -2.04 77.55 -151,224 7,261,993
2017-03-15 2017-03-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -3,012 95,592 -3.05 77.24 -232,650 7,383,612
2017-03-15 2017-03-09 4 DXCM DEXCOM INC
Common Stock
S - Sale -7,329 98,604 -6.92 77.56 -568,423 7,647,529
2017-03-15 3 DXCM DEXCOM INC
Common Stock
273,966
2017-03-15 3 DXCM DEXCOM INC
Common Stock
180,033
2017-03-15 3 DXCM DEXCOM INC
Common Stock
218,133
2017-03-15 3 DXCM DEXCOM INC
Common Stock
273,966
2017-03-15 3 DXCM DEXCOM INC
Common Stock
180,033
2017-03-15 3 DXCM DEXCOM INC
Common Stock
218,133
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)