Introduction

This page provides a comprehensive analysis of the known insider trading history of David Byron Jr Smith. 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 David Byron Jr Smith has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:ITW / Illinois Tool Works Inc. Director 123,037
US:NTRS / Northern Trust Corporation Director 64,584
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by David Byron Jr Smith. 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 David Byron Jr Smith 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
2025-08-05 2025-08-01 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 153 123,037 0.12 252.31 38,603 31,043,465
2025-07-31 2025-07-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,520 64,584 2.41
2025-06-04 2025-06-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
P - Purchase 872 122,884 0.71 241.16 210,292 29,634,705
2025-06-04 2025-06-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -872 122,012 -0.71
2025-05-06 2025-05-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 922 122,884 0.76 242.32 223,419 29,777,251
2025-05-01 2025-04-30 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,160 63,064 3.55
2025-04-24 2025-04-22 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,902 1,902
2025-02-11 2025-02-07 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 151 121,962 0.12 255.56 38,590 31,168,609
2025-02-04 2025-01-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,780 59,082 3.11
2024-12-11 2024-12-09 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
P - Purchase 635 121,811 0.52 275.20 174,752 33,522,387
2024-12-11 2024-12-09 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -635 121,176 -0.52
2024-11-05 2024-11-01 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 147 121,811 0.12 263.08 38,673 32,046,038
2024-11-04 2024-10-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,990 57,302 3.60
2024-08-06 2024-08-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 158 121,664 0.13 243.85 38,528 29,667,766
2024-08-01 2024-07-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,250 55,312 4.24
2024-06-17 2024-06-13 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
P - Purchase 775 121,506 0.64 238.82 185,086 29,018,063
2024-06-17 2024-06-13 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -775 120,731 -0.64
2024-05-07 2024-05-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 916 121,506 0.76 243.88 223,394 29,632,883
2024-05-02 2024-04-30 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,400 53,062 4.74
2024-04-18 2024-04-16 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,822 1,822
2024-02-06 2024-02-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 151 120,590 0.13 256.06 38,665 30,878,275
2024-02-01 2024-01-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,500 48,807 5.40
2023-12-01 2023-11-30 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
P - Purchase 1,000 120,439 0.84 241.79 241,790 29,120,946
2023-12-01 2023-11-29 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -1,000 119,439 -0.83
2023-11-07 2023-11-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 166 120,439 0.14 233.11 38,696 28,075,535
2023-11-01 2023-10-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 3,220 46,307 7.47
2023-08-08 2023-08-04 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 157 120,273 0.13 246.64 38,722 29,664,133
2023-08-02 2023-07-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,600 43,087 6.42
2023-05-09 2023-05-05 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 971 120,116 0.81 230.31 223,631 27,663,916
2023-05-02 2023-04-28 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,700 40,487 7.15
2023-04-27 2023-04-25 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,855 1,855
2023-02-07 2023-02-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 151 119,145 0.13 246.73 37,256 29,396,646
2023-02-02 2023-01-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,160 36,444 6.30
2022-12-12 2022-12-09 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
P - Purchase 1,390 118,994 1.18 221.81 308,316 26,394,059
2022-12-12 2022-12-08 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -1,390 117,604 -1.17
2022-11-08 2022-11-04 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 174 118,994 0.15 215.15 37,436 25,601,559
2022-11-02 2022-10-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,360 34,284 7.39
2022-08-09 2022-08-05 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 177 118,820 0.15 210.76 37,305 25,042,503
2022-08-01 2022-07-29 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,040 31,924 6.83
2022-05-10 2022-05-06 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 991 118,643 0.84 209.27 207,387 24,828,421
2022-05-03 2022-04-29 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,840 29,884 6.56
2022-04-28 2022-04-26 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,343 1,343
2022-02-08 2022-02-04 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 163 117,652 0.14 228.92 37,314 26,932,896
2022-02-02 2022-01-31 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,730 28,044 6.57
2021-12-14 2021-12-10 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
J - Other 255,900 255,900
2021-11-09 2021-11-05 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 160 117,489 0.14 234.07 37,451 27,500,650
2021-10-29 2021-10-29 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,650 26,314 6.69
2021-09-14 2021-09-10 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -1,000 117,329 -0.85
2021-08-10 2021-08-06 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 164 118,329 0.14 227.73 37,348 26,947,063
2021-08-02 2021-07-30 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,780 24,664 7.78
2021-05-11 2021-05-07 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 870 118,165 0.74 238.28 207,304 28,156,356
2021-05-03 2021-04-29 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,780 22,884 8.43
2021-04-22 2021-04-20 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,164 1,164
2021-02-09 2021-02-05 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 185 117,295 0.16 202.19 37,405 23,715,876
2021-02-01 2021-01-28 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,110 21,104 5.55
2020-11-10 2020-11-06 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 179 117,110 0.15 209.42 37,486 24,525,176
2020-11-02 2020-10-29 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,300 19,994 6.95
2020-08-11 2020-08-07 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 196 116,931 0.17 190.55 37,348 22,281,202
2020-08-03 2020-07-30 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,300 18,694 7.47
2020-06-15 2020-06-09 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -901 116,735 -0.77
2020-05-12 2020-05-08 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 1,132 117,636 0.97 161.01 182,263 18,940,572
2020-04-23 2020-04-21 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,679 1,679
2020-02-11 2020-02-07 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 204 116,504 0.18 183.54 37,442 21,383,144
2019-11-05 2019-11-01 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 217 116,300 0.19 172.79 37,495 20,095,477
2019-08-06 2019-08-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 247 116,083 0.21 151.67 37,462 17,606,309
2019-05-07 2019-05-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 1,159 115,836 1.01 157.41 182,438 18,233,745
2019-04-25 2019-04-23 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,146 1,146
2019-02-05 2019-02-01 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 278 114,677 0.24 134.43 37,372 15,416,029
2018-11-06 2018-11-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 286 114,399 0.25 130.71 37,383 14,953,093
2018-08-07 2018-08-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 268 114,113 0.24 139.55 37,399 15,924,469
2018-05-08 2018-05-04 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 1,253 113,845 1.11 145.47 182,274 16,561,032
2018-04-19 2018-04-17 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,033 1,033
2018-02-06 2018-02-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 220 112,592 0.20 178.30 39,226 20,075,154
2017-11-07 2017-11-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 119 112,372 0.11 157.30 18,719 17,676,116
2017-09-05 2017-08-31 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -3,000 112,253 -2.60
2017-08-08 2017-08-04 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 131 115,253 0.11 142.88 18,717 16,467,349
2017-06-02 2017-06-01 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 2,585 1,214 -188.55
2017-05-09 2017-05-05 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 1,172 115,122 1.03 139.60 163,611 16,071,031
2017-04-27 2017-04-25 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,214 1,214
2017-02-07 2017-02-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 147 113,950 0.13 127.21 18,700 14,495,580
2016-12-19 2016-12-08 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift -4,000 113,803 -3.40
2016-11-08 2016-11-04 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 101 117,803 0.09 114.02 11,516 13,431,898
2016-08-09 2016-08-05 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 99 117,702 0.08 116.84 11,567 13,752,302
2016-05-10 2016-05-06 4 ITW ILLINOIS TOOL WORKS INC
Commom Stock
A - Award 1,406 14,702 10.57 104.19 146,491 1,531,801
2016-04-20 2016-04-19 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,531 1,531
2016-02-09 2016-02-05 4 ITW ILLINOIS TOOL WORKS INC
Commom Stock
A - Award 128 13,296 0.97 90.41 11,572 1,202,091
2015-05-12 2015-05-08 4 ITW ILLINOIS TOOL WORKS INC
Commom Stock
A - Award 1,303 13,168 10.98 95.92 124,984 1,263,075
2015-04-23 2015-04-21 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,530 1,530
2014-05-06 2014-05-02 4 ITW ILLINOIS TOOL WORKS INC
Commom Stock
A - Award 1,404 11,865 13.42 85.43 119,944 1,013,627
2014-05-06 2014-02-04 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
G - Gift 531 15,517 3.54
2014-04-16 2014-04-15 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,677 1,677
2014-02-10 2014-02-03 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 232 2,125 12.26
2014-02-10 2014-02-03 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 232 2,125 12.26
2014-02-10 2014-02-03 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 232 4,153,677 0.01
2013-05-07 2013-05-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 1,597 10,461 18.02 65.71 104,939 687,392
2013-04-30 2013-04-16 4/A NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,873 1,873
2013-04-16 2013-04-16 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,872 1,872
2013-02-06 2013-02-05 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 271 1,893 16.71
2013-02-06 2013-02-05 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 271 1,893 16.71
2013-02-06 2013-02-05 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 271 1,893 16.71
2012-12-21 2012-12-21 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 1,704 1,704
2012-11-06 2012-11-02 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 544 8,864 6.54 62.02 33,739 549,745
2012-08-07 2012-08-03 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 606 8,320 7.86 55.62 33,706 462,758
2012-06-15 2012-06-14 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
S - Sale -66,667 2,650,002 -2.45 54.15 -3,610,018 143,497,608
2012-06-14 2012-06-13 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
S - Sale -66,667 2,716,669 -2.40 54.66 -3,644,018 148,493,128
2012-06-14 2012-06-12 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
S - Sale -66,666 2,783,336 -2.34 55.22 -3,681,297 153,695,814
2012-05-08 2012-05-04 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 952 7,714 14.08 56.43 53,721 435,301
2012-04-20 2012-04-20 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 558 1,622 52.44
2012-04-20 2012-04-20 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 558 1,622 52.44
2012-04-20 2012-04-20 4 NTRS NORTHERN TRUST CORP
Common Stock
G - Gift 558 1,622 52.44
2012-04-19 2012-04-17 4 NTRS NORTHERN TRUST CORP
Common Stock
A - Award 1,920 1,920
2012-02-14 2012-02-10 4 ITW ILLINOIS TOOL WORKS INC
Common Stock
A - Award 2,130 6,762 45.98 55.71 118,662 376,711
2010-04-22 3 NTRS NORTHERN TRUST CORP
Common Stock
12,000
2010-04-22 3 NTRS NORTHERN TRUST CORP
Common Stock
1,362,880
2010-04-22 3 NTRS NORTHERN TRUST CORP
Common Stock
1,064
2010-04-22 3 NTRS NORTHERN TRUST CORP
Common Stock
1,064
2010-04-22 3 NTRS NORTHERN TRUST CORP
Common Stock
1,064
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)