MannKind Corporation
US ˙ NasdaqGM ˙ US56400P7069

Introduction

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

Security Title Latest Reported Holdings
US:MNKD / MannKind Corporation Chief People & Workpl Officer 1,079,013
US:AMGN / Amgen Inc. SVP, Human Resources 17,422
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Stuart A Tross. 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 Purchases MNKD / MannKind Corporation - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in MNKD / MannKind Corporation. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
2022-07-31 MNKD Tross Stuart A 4,581 2.9300 4,581 2.9300 13,422 201 5.6300 12,369 92.15
2022-02-28 MNKD Tross Stuart A 9,225 2.7100 9,225 2.7100 25,000
2022-01-31 MNKD Tross Stuart A 2,254 3.1700 2,254 3.1700 7,145
2021-07-30 MNKD Tross Stuart A 4,476 2.9900 4,476 2.9900 13,383
2021-01-31 MNKD Tross Stuart A 5,000 1.3300 5,000 1.3300 6,650
2020-07-31 MNKD Tross Stuart A 5,000 1.2500 5,000 1.2500 6,250
2020-01-31 MNKD Tross Stuart A 5,000 0.9500 5,000 0.9500 4,750
2019-07-31 MNKD Tross Stuart A 5,000 0.9500 5,000 0.9500 4,750
2019-01-31 MNKD Tross Stuart A 5,000 1.0700 5,000 1.0700 5,350
2018-11-14 MNKD Tross Stuart A 14,124 1.7700 14,124 1.7700 24,999
2018-08-02 MNKD Tross Stuart A 5,000 1.3100 5,000 1.3100 6,550
2017-12-21 MNKD Tross Stuart A 39,840 2.5200 39,840 2.5200 100,397

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

MNKD / MannKind Corporation Insider Trades
Insider Sales MNKD / MannKind Corporation - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in MNKD / MannKind Corporation. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

MNKD / MannKind Corporation Insider Trades
Insider Trading History

This table shows the complete list of insider trades made by Stuart A Tross 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
2025-08-06 2025-08-05 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 12,755 1,079,013 1.20 3.92 50,000 4,229,731
2025-07-17 2025-07-15 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
F - Taxes -28,057 1,066,258 -2.56 3.85 -108,019 4,105,093
2025-05-20 2025-05-19 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
F - Taxes -6,147 1,090,427 -0.56 4.37 -26,862 4,765,166
2025-05-15 2025-05-13 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 119,000 1,096,574 12.17
2025-05-15 2025-05-12 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
F - Taxes -8,051 976,016 -0.82 4.56 -36,713 4,450,633
2025-05-15 2025-05-12 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
F - Taxes -88,724 984,067 -8.27 4.56 -404,581 4,487,346
2025-05-15 2025-05-10 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 105,600 1,072,791 10.92
2024-11-08 2024-11-06 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
S - Sale X -55,000 967,191 -5.38 7.34 -403,700 7,099,182
2024-09-04 2024-09-03 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
S - Sale X -25,000 1,022,191 -2.39 6.26 -156,500 6,398,916
2024-08-30 2024-08-30 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
S - Sale X -35,000 1,047,191 -3.23 6.32 -221,200 6,618,247
2024-08-30 2024-08-30 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
S - Sale X -45,000 1,082,191 -3.99 6.33 -284,850 6,850,269
2024-08-29 2024-08-27 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
F - Taxes -20,779 1,127,191 -1.81 5.38 -111,791 6,064,288
2024-07-17 2024-07-15 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
F - Taxes -11,657 1,147,970 -1.01 5.83 -67,960 6,692,665
2024-07-17 2024-06-30 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 4,689 1,159,627 0.41 3.09 14,489 3,583,247
2024-05-21 2024-05-18 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
F - Taxes -6,130 1,154,938 -0.53 4.59 -28,137 5,301,165
2024-05-21 2024-05-17 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
F - Taxes -62,056 1,161,068 -5.07 4.59 -284,837 5,329,302
2024-05-21 2024-05-17 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 77,420 1,223,124 6.76 4.59 355,358 5,614,139
2024-05-17 2024-05-15 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
A - Award 129,000 1,145,704 12.69
2024-05-14 2024-05-10 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -8,028 1,016,704 -0.78 4.32 -34,681 4,392,161
2024-02-05 2024-02-04 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 15,290 1,024,732 1.51 3.27 49,998 3,350,874
2024-02-05 2023-12-31 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 1,006 1,009,442 0.10 3.09 3,109 3,119,176
2024-02-05 2023-06-30 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 4,012 1,008,436 0.40 3.46 13,882 3,489,189
2023-08-28 2023-08-27 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -20,328 1,004,424 -1.98 4.72 -95,948 4,740,881
2023-05-26 2023-05-25 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
A - Award 92,000 1,024,752 9.86
2023-05-24 2023-05-22 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -279,998 932,752 -23.09 4.79 -1,341,190 4,467,882
2023-05-24 2023-05-22 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
A - Award 400,000 1,212,750 49.22 4.79 1,916,000 5,809,072
2023-05-19 2023-05-18 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -5,941 812,750 -0.73 4.56 -27,091 3,706,140
2023-05-15 2023-05-15 4 MNKD MANNKIND CORP
Common Stock,$.01 par value
A - Award 10,000 818,691 1.24 4.23 42,300 3,463,063
2023-05-12 2023-05-10 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -7,781 808,691 -0.95 4.40 -34,236 3,558,240
2022-08-29 2022-08-27 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -14,178 816,472 -1.71 3.73 -52,884 3,045,441
2022-08-24 2022-02-28 4/A MNKD MANNKIND CORP
Common Stock,$.01 par value
A - Award 9,225 632,010 1.48 2.71 25,000 1,712,747
2022-08-24 2022-07-31 4/A MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 4,581 830,650 0.55 2.93 13,422 2,433,804
2022-08-24 2022-01-31 4/A MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 2,254 622,785 0.36 3.17 7,145 1,974,228
2022-08-01 2022-07-31 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 4,581 830,650 0.55 2.93 13,422 2,433,804
2022-05-20 2022-05-18 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -5,941 826,069 -0.71 3.19 -18,952 2,635,160
2022-05-12 2022-05-10 4 MNKD MANNKIND CORP
Restricted Stock Unit
A - Award 110,000 832,010 15.24
2022-05-12 2022-05-10 4 MNKD MANNKIND CORP
Restricted Stock Unit
A - Award 90,000 722,010 14.24
2022-03-01 2022-02-28 4 MNKD MANNKIND CORP
Common Stock,$.01 par value
P - Purchase 9,225 632,010 1.48 2.71 25,000 1,712,747
2022-02-09 2022-01-31 4/A MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 2,254 622,785 0.36 3.17 7,145 1,974,228
2022-02-02 2022-01-31 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 4,254 624,785 0.69 3.17 13,485 1,980,568
2021-08-27 2021-08-27 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -14,177 620,531 -2.23 4.91 -69,609 3,046,807
2021-08-02 2021-07-30 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 4,476 634,708 0.71 2.99 13,383 1,897,777
2021-05-20 2021-05-18 4 MNKD MANNKIND CORP
Restricted Stock Unit
A - Award 79,000 629,708 14.35
2021-05-20 2021-05-18 4 MNKD MANNKIND CORP
Restricted Stock Unit
A - Award 68,717 550,708 14.26
2021-02-02 2021-01-31 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 5,000 481,991 1.05 1.33 6,650 641,048
2020-12-30 2020-12-28 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -1,729 476,991 -0.36 3.33 -5,758 1,588,380
2020-08-31 2020-08-27 4 MNKD MANNKIND CORP
Restricted Stock Unit
A - Award 200,000 478,720 71.76
2020-08-31 2020-08-27 4 MNKD MANNKIND CORP
Restricted Stock Unit
A - Award 164,000 278,720 142.96
2020-08-04 2020-07-31 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 5,000 114,720 4.56 1.25 6,250 143,400
2020-02-28 2020-02-25 4 MNKD MANNKIND CORP
Employee Stock Option (right to buy)
A - Award 20,000 20,000 2.70 54,000 54,000
2020-02-28 2020-02-25 4 MNKD MANNKIND CORP
Employee Stock Option (right to buy)
A - Award 28,144 28,144 1.42 39,964 39,964
2020-02-21 2020-02-20 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -15,021 109,720 -12.04 1.51 -22,682 165,677
2020-02-03 2020-01-31 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 5,000 124,741 4.18 0.95 4,750 118,504
2019-12-27 2019-12-27 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -2,044 77,996 -2.55 1.31 -2,678 102,175
2019-07-31 2019-07-31 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 5,000 121,785 4.28 0.95 4,750 115,696
2019-05-16 2019-05-14 4 MNKD MANNKIND CORP
Employee Stock Option (right to buy)
A - Award 234,000 234,000 1.32 308,880 308,880
2019-03-13 2018-11-14 4/A MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 14,124 77,084 22.43 1.77 24,999 136,439
2019-02-25 2019-02-20 4 MNKD MANNKIND CORP
Restricted Stock Unit
A - Award 36,745 116,785 45.91
2019-01-31 2019-01-31 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 5,000 80,040 6.66 1.07 5,350 85,643
2019-01-31 2018-12-23 4 MNKD MANNKIND CORP
Common Stock, $.01 Par Value
F - Taxes -2,044 75,040 -2.65 1.09 -2,228 81,794
2018-11-15 2018-11-14 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
A - Award 14,124 77,084 22.43 1.77 24,999 136,439
2018-08-06 2018-08-02 4 MNKD MANNKIND CORP
Employee Stock Option (right to buy)
A - Award 20,000 20,000 2.70 54,000 54,000
2018-08-06 2018-08-02 4 MNKD MANNKIND CORP
Employee Stock Option (right to buy)
A - Award 28,144 28,144 1.42 39,964 39,964
2018-08-06 2018-08-02 4 MNKD MANNKIND CORP
Common Stock, $0.01 Par Value
P - Purchase 5,000 62,960 8.63 1.31 6,550 82,478
2018-05-18 2018-05-16 4 MNKD MANNKIND CORP
Employee Stock Option (right to buy)
A - Award 214,000 214,000 1.91 408,740 408,740
2017-12-21 2017-12-21 4 MNKD MANNKIND CORP
Common Stock,$.01 par value
P - Purchase 39,840 59,840 199.20 2.52 100,397 150,797
2017-03-20 2017-02-16 4 MNKD MANNKIND CORP
Employee Stock Option (right to buy)
A - Award 400,000 400,000 0.54 216,000 216,000
2017-03-20 2017-02-16 4 MNKD MANNKIND CORP
Common Stock, Par $0.01
A - Award 100,000 100,000
2016-05-05 2016-05-03 4 AMGN AMGEN INC
Nqso (Right to Buy)
A - Award 17,422 17,422
2016-05-05 2016-05-03 4 AMGN AMGEN INC
Common Stock
A - Award 2,046 25,671 8.66
2016-04-28 2016-04-27 4 AMGN AMGEN INC
Common Stock
F - Taxes -254 23,625 -1.06 162.85 -41,364 3,847,331
2016-04-28 2016-04-26 4 AMGN AMGEN INC
Common Stock
F - Taxes -181 23,879 -0.75 163.46 -29,586 3,903,261
2016-03-29 2016-03-25 4 AMGN AMGEN INC
Common Stock
F - Taxes -2,703 24,060 -10.10 149.24 -403,396 3,590,714
2016-03-04 2016-03-02 4 AMGN AMGEN INC
Common Stock
A - Award 6,200 26,678 30.28
2016-02-01 2016-01-31 4 AMGN AMGEN INC
Common Stock
F - Taxes -251 20,478 -1.21 152.73 -38,335 3,127,605
2015-10-27 2015-10-25 4 AMGN AMGEN INC
Common Stock
F - Taxes -569 20,696 -2.68 155.75 -88,622 3,223,402
2015-04-28 2015-04-27 4 AMGN AMGEN INC
Common Stock
F - Taxes -242 21,187 -1.13 167.91 -40,634 3,557,509
2015-04-28 2015-04-26 4 AMGN AMGEN INC
Common Stock
F - Taxes -176 21,429 -0.81 167.91 -29,552 3,598,143
2015-04-28 2015-04-25 4 AMGN AMGEN INC
Common Stock
F - Taxes -318 21,605 -1.45 167.91 -53,395 3,627,696
2015-04-24 2015-04-23 4 AMGN AMGEN INC
Common Stock
S - Sale -3,012 21,923 -12.08 169.31 -509,964 3,711,798
2015-03-31 2015-03-27 4 AMGN AMGEN INC
Common Stock
F - Taxes -3,711 24,935 -12.95 160.55 -595,801 4,003,314
2015-03-06 2015-03-04 4 AMGN AMGEN INC
Common Stock
A - Award 8,324 28,561 41.13
2015-03-04 2015-03-03 4 AMGN AMGEN INC
Common Stock
S - Sale -4,415 20,237 -17.91 157.74 -696,427 3,192,205
2015-02-03 2015-01-30 4 AMGN AMGEN INC
Common Stock
A - Award 1,576 24,652 6.83
2014-09-02 2014-09-01 4 AMGN AMGEN INC
Common Stock
F - Taxes -7,292 23,022 -24.05 139.38 -1,016,359 3,208,806
2014-04-29 2014-04-27 4 AMGN AMGEN INC
Common Stock
F - Taxes -7 30,204 -0.02 111.41 -780 3,365,028
2014-04-29 2014-04-27 4 AMGN AMGEN INC
Common Stock
F - Taxes -164 30,211 -0.54 111.41 -18,271 3,365,808
2014-04-29 2014-04-26 4 AMGN AMGEN INC
Common Stock
F - Taxes -137 30,375 -0.45 111.41 -15,263 3,384,079
2014-04-29 2014-04-25 4 AMGN AMGEN INC
Common Stock
F - Taxes -222 30,512 -0.72 113.72 -25,246 3,469,825
2014-03-18 2014-03-14 4 AMGN AMGEN INC
Common Stock
F - Taxes -1,647 30,734 -5.09 123.96 -204,162 3,809,787
2014-03-07 2014-03-05 4 AMGN AMGEN INC
Common Stock
A - Award 4,381 32,273 15.71
2014-02-04 2014-01-31 4 AMGN AMGEN INC
Common Stock
A - Award 1,681 27,892 6.41
2013-10-29 2013-10-25 4 AMGN AMGEN INC
Common Stock
A - Award 3,180 26,128 13.86
2013-10-24 3 AMGN AMGEN INC
Common Stock
22,948
2013-10-24 3 AMGN AMGEN INC
Common Stock
593
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)