Introduction

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

Security Title Latest Reported Holdings
US:CUZ / Cousins Properties Incorporated Director 88,656
US:AIV / Apartment Investment and Management Company Director 143,868
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 R Dary Stone. 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 R Dary Stone 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
2025-06-04 2025-06-02 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 3,558 88,656 4.18 26.70 94,999 2,367,115
2025-06-04 2025-06-02 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 4,802 85,098 5.98 28.11 134,984 2,392,105
2025-01-30 2025-01-29 4 AIV APARTMENT INVESTMENT & MANAGEMENT CO
Class A Common Stock
A - Award 24,499 143,868 20.52
2024-06-04 2024-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 4,324 80,296 5.69 21.97 94,998 1,764,103
2024-06-04 2024-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 5,836 75,972 8.32 23.13 134,987 1,757,232
2024-02-02 2024-01-31 4 AIV APARTMENT INVESTMENT & MANAGEMENT CO
Class A Common Stock
A - Award 30,184 119,369 33.84
2023-06-02 2023-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 4,624 70,136 7.06 18.92 87,486 1,326,973
2023-06-02 2023-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 6,275 65,512 10.59 19.92 124,998 1,304,999
2023-02-03 2023-02-01 4 AIV APARTMENT INVESTMENT & MANAGEMENT CO
Class A Common Stock
A - Award 26,596 89,185 42.49
2022-06-01 2022-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 2,666 59,237 4.71 32.82 87,498 1,944,158
2022-06-01 2022-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 3,617 56,571 6.83 34.55 124,967 1,954,528
2022-02-08 2022-02-04 4 AIV APARTMENT INVESTMENT & MANAGEMENT CO
Class A Common Stock
A - Award 12,355 62,589 24.59
2021-06-03 2021-06-01 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 1,917 52,954 3.76 36.51 69,990 1,933,351
2021-06-03 2021-06-01 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 2,732 51,037 5.66 38.43 104,991 1,961,352
2021-02-23 2021-02-19 4 CUZ COUSINS PROPERTIES INC
Stock Options (Right to Buy)
M - Exercise -335 0 -100.00
2021-02-23 2021-02-19 4 CUZ COUSINS PROPERTIES INC
Common Stock
F - Taxes -252 48,305 -0.52 33.12 -8,346 1,599,862
2021-02-23 2021-02-19 4 CUZ COUSINS PROPERTIES INC
Common Stock
M - Exercise 335 48,557 0.69 24.88 8,335 1,208,098
2021-01-29 2021-01-27 4 AIV APARTMENT INVESTMENT & MANAGEMENT CO
Class A Common Stock
A - Award 16,234 50,234 47.75
2020-12-22 2020-12-21 4 AIV APARTMENT INVESTMENT & MANAGEMENT CO
Class A Common Stock
A - Award 34,000 34,000
2020-06-03 2020-06-01 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 2,027 48,222 4.39 29.59 59,979 1,426,889
2020-06-03 2020-06-01 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 2,889 46,195 6.67 31.15 89,992 1,438,974
2019-06-04 2019-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 6,976 173,227 4.20 8.60 59,994 1,489,752
2019-06-04 2019-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 9,729 166,251 6.22 9.25 89,993 1,537,822
2019-02-11 2019-02-07 4 CUZ COUSINS PROPERTIES INC
Stock Options (Right to Buy)
M - Exercise -54,490 0 -100.00
2019-02-11 2019-02-07 4 CUZ COUSINS PROPERTIES INC
Common Stock
F - Taxes -42,056 156,522 -21.18 9.30 -391,121 1,455,655
2019-02-11 2019-02-07 4 CUZ COUSINS PROPERTIES INC
Common Stock
M - Exercise 54,490 198,578 37.82 6.33 344,922 1,256,999
2018-06-04 2018-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 6,703 144,088 4.88 8.95 59,992 1,289,588
2018-06-04 2018-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 9,922 137,385 7.78 9.07 89,993 1,246,082
2018-05-18 3 CUZ COUSINS PROPERTIES INC
Common Stock
254,926
2018-05-18 3 CUZ COUSINS PROPERTIES INC
Common Stock
254,926
2018-05-18 3 CUZ COUSINS PROPERTIES INC
Common Stock
254,926
2017-10-13 2017-10-12 4 PKY Parkway, Inc.
Common Stock
D - Sale to Issuer -29,982 0 -100.00
2017-07-14 2017-05-23 4 PKY Parkway, Inc.
Common Stock
A - Award 6,425 29,982 27.27
2016-06-02 2016-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 7,035 188,463 3.88 10.66 74,993 2,009,016
2015-06-03 2015-06-01 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 7,621 181,428 4.38 9.84 74,991 1,785,252
2014-06-04 2014-06-02 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 6,345 173,807 3.79 11.82 74,998 2,054,399
2014-03-05 2014-03-02 4 CUZ COUSINS PROPERTIES INC
Phantom Stock
M - Exercise -401 0 -100.00
2014-03-05 2014-03-02 4 CUZ COUSINS PROPERTIES INC
Common Stock
D - Sale to Issuer -401 167,462 -0.24 11.07 -4,439 1,853,804
2014-03-05 2014-03-02 4 CUZ COUSINS PROPERTIES INC
Common Stock
M - Exercise 401 167,863 0.24 11.07 4,439 1,858,243
2013-06-04 2013-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 4,604 167,462 2.83 10.86 49,999 1,818,637
2013-02-21 2013-02-04 4 CUZ COUSINS PROPERTIES INC
Common Stock
I - Other -3,039 0 -100.00 9.00 -27,351
2013-02-21 2013-02-04 4 CUZ COUSINS PROPERTIES INC
Common Stock
I - Other -300 3,039 -8.98 9.01 -2,703 27,381
2012-06-04 2012-05-31 4 CUZ COUSINS PROPERTIES INC
Common Stock
A - Award 6,673 162,863 4.27 7.49 49,997 1,220,235
2003-12-12 2003-12-10 4 CUZ COUSINS PROPERTIES INC
Options-(rights to buy) with tandem tax withholding rights
A - Award 21,784 255,186 9.33 30.20 657,877 7,706,617
2003-12-12 2003-12-10 4 CUZ COUSINS PROPERTIES INC
Restricted Stock
A - Award 4,720 4,720 30.20 142,544 142,544
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)