Green Plains Inc.
US ˙ NasdaqGS ˙ US3932221043

Introduction

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

Security Title Latest Reported Holdings
Chief Financial Officer 137,450
US:BG / Bunge Global SA Chief Financial Officer 81,387
US:GPRE / Green Plains Inc. Chief Financial Officer 74,570
US:GPP / Green Plains Partners LP - Limited Partnership Chief Financial Officer 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 John W Neppl. 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 GPRE / Green Plains Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in GPRE / Green Plains Inc.. 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 (%)
2017-11-06 GPRE Neppl John W 18,083 16.7600 18,083 16.7600 303,071 196 21.5500 86,618 28.58
2017-11-06 GPRE Neppl John W 8,890 16.7600 8,890 16.7600 148,996
2017-11-06 GPRE Neppl John W 3,027 17.0000 3,027 17.0000 51,459

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

GPRE / Green Plains Inc. Insider Trades
Insider Sales GPRE / Green Plains Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in GPRE / Green Plains Inc.. 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.

GPRE / Green Plains Inc. Insider Trades
Insider Trading History

This table shows the complete list of insider trades made by John W Neppl 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
2025-09-04 2025-09-02 4 BG Bunge Global SA
Common Stock
A - Award 353 137,450 0.26 82.44 29,101 11,331,378
2025-06-04 2025-06-02 4 BG Bunge Global SA
Common Stock
A - Award 372 137,097 0.27 77.87 28,968 10,675,743
2025-03-18 2025-03-15 4 BG Bunge Global SA
Common Stock
A - Award 17,723 136,725 14.89
2025-03-18 2025-03-15 4 BG Bunge Global SA
Common Stock
F - Taxes -16,033 119,002 -11.87 73.35 -1,176,021 8,728,797
2025-03-18 2025-03-15 4 BG Bunge Global SA
Common Stock
A - Award 26,356 135,035 24.25
2025-03-06 2025-03-04 4 BG Bunge Global SA
Common Stock
A - Award 316 108,679 0.29 71.86 22,708 7,809,673
2024-12-03 2024-12-02 4 BG Bunge Global SA
Common Stock
A - Award 253 108,363 0.23 88.62 22,421 9,603,129
2024-09-04 2024-09-02 4 BG Bunge Global SA
Common Stock
A - Award 221 108,110 0.20 100.95 22,310 10,913,704
2024-06-05 2024-06-03 4 BG Bunge Global SA
Common Stock
A - Award 206 107,889 0.19 107.37 22,118 11,584,042
2024-03-19 2024-03-15 4 BG Bunge Global SA
Common Stock
A - Award 12,632 107,683 13.29
2024-03-19 2024-03-15 4 BG Bunge Global SA
Common Stock
F - Taxes -4,746 95,051 -4.76 95.00 -450,846 9,029,370
2024-03-19 2024-03-15 4 BG Bunge Global SA
Common Stock
F - Taxes -14,240 99,797 -12.49 95.00 -1,352,729 9,480,216
2024-03-19 2024-03-15 4 BG Bunge Global SA
Common Stock
A - Award 32,252 114,037 39.44
2024-03-05 2024-03-01 4 BG Bunge Global SA
Common Stock
A - Award 215 81,785 0.26 93.68 20,142 7,661,823
2023-12-05 2023-12-01 4 BG Bunge Global SA
Common Stock
A - Award 183 81,570 0.22 109.69 20,073 8,947,209
2023-09-06 2023-09-01 4 BG BUNGELTD
Common Stock
A - Award 173 81,387 0.21 114.94 19,884 9,354,215
2023-06-06 2023-06-02 4 BG BUNGELTD
Common Stock
A - Award 203 81,214 0.25 92.13 18,703 7,482,449
2023-03-16 2023-03-15 4 BG BUNGELTD
Common Stock
A - Award 10,125 81,011 14.28
2023-03-14 2023-03-10 4 BG BUNGELTD
Common Stock
F - Taxes -5,305 70,886 -6.96 93.49 -495,980 6,627,345
2023-03-14 2023-03-10 4 BG BUNGELTD
Common Stock
F - Taxes -17,365 76,191 -18.56 93.49 -1,623,506 7,123,325
2023-03-14 2023-03-10 4 BG BUNGELTD
Common Stock
A - Award 39,198 93,556 72.11
2023-03-06 2023-03-02 4 BG BUNGELTD
Common Stock
A - Award 205 54,358 0.38 96.44 19,770 5,242,286
2022-12-06 2022-12-02 4 BG BUNGELTD
Common Stock
A - Award 203 54,153 0.38 96.50 19,588 5,225,494
2022-09-07 2022-09-02 4 BG BUNGELTD
Common Stock
A - Award 195 53,950 0.36 100.05 19,510 5,397,698
2022-06-03 2022-06-02 4 BG BUNGELTD
Common Stock
F - Taxes -11 53,755 -0.02 114.57 -1,260 6,158,710
2022-06-03 2022-06-02 4 BG BUNGELTD
Common Stock
A - Award 164 53,766 0.31 114.57 18,789 6,159,971
2022-06-03 2022-06-01 4 BG BUNGELTD
Common Stock
F - Taxes -2,279 53,602 -4.08 115.63 -263,521 6,197,999
2022-03-17 2022-03-15 4 BG BUNGELTD
Common Stock
A - Award 9,278 55,881 19.91
2022-03-15 2022-03-12 4 BG BUNGELTD
Common Stock
F - Taxes -8,795 46,603 -15.88 110.15 -968,769 5,133,320
2022-03-15 2022-03-12 4 BG BUNGELTD
Common Stock
A - Award 19,696 55,398 55.17
2022-03-04 2022-03-02 4 BG BUNGELTD
Common Stock
A - Award 129 35,702 0.36 107.37 13,851 3,833,324
2021-12-06 2021-12-02 4 BG BUNGELTD
Common Stock
A - Award 162 35,573 0.46 85.70 13,884 3,048,784
2021-09-07 2021-09-02 4 BG BUNGELTD
Common Stock
A - Award 178 35,411 0.51 77.62 13,815 2,748,425
2021-06-03 2021-06-02 4 BG BUNGELTD
Common Stock
F - Taxes -13 35,504 -0.04 88.77 -1,154 3,151,690
2021-06-03 2021-06-02 4 BG BUNGELTD
Common Stock
A - Award 447 35,517 1.27 88.77 39,680 3,152,844
2021-06-03 2021-06-01 4 BG BUNGELTD
Common Stock
F - Taxes -2,224 35,070 -5.96 88.66 -197,191 3,109,482
2021-03-17 2021-03-15 4 BG BUNGELTD
Common Stock
A - Award 10,000 37,294 36.64 79.61 796,100 2,968,975
2021-03-04 2021-03-02 4 BG BUNGELTD
Common Stock
A - Award 133 27,294 0.49 79.16 10,528 2,160,593
2020-12-04 2020-12-02 4 BG BUNGELTD
Common Stock
A - Award 178 37,161 0.48 59.18 10,534 2,199,188
2020-09-03 2020-09-01 4 BG BUNGELTD
Common Stock
A - Award 228 36,983 0.62 45.54 10,384 1,684,391
2020-06-03 2020-06-01 4 BG BUNGELTD
Common Stock
F - Taxes -1,478 36,755 -3.87 39.24 -58,004 1,442,450
2020-06-03 2020-06-01 4 BG BUNGELTD
Common Stock
A - Award 323 38,233 0.85 39.25 12,677 1,500,538
2020-03-13 2020-03-13 4 BG Bunge LTD
Common Stock
P - Purchase 5,000 5,000 36.55 182,735 182,735
2020-03-12 2020-03-10 4 BG Bunge LTD
Stock Options (Right to buy)
A - Award 36,500 36,500
2020-03-12 2020-03-10 4 BG Bunge LTD
Common Stock
A - Award 11,000 37,910 40.88
2020-03-04 2020-03-02 4 BG Bunge LTD
Common Stock
A - Award 148 26,910 0.55 48.12 7,122 1,295,044
2020-03-02 2020-02-28 4 BG Bunge LTD
Common Stock
P - Purchase 2,500 26,762 10.30 46.63 116,575 1,247,912
2020-02-21 2020-02-20 4 BG Bunge LTD
Common Stock
P - Purchase 4,137 24,262 20.56 53.78 222,504 1,304,907
2020-02-21 2020-02-19 4 BG Bunge LTD
Common Stock
P - Purchase 5,863 20,125 41.11 53.90 316,033 1,084,798
2019-12-04 2019-12-02 4 BG Bunge LTD
Common Stock
A - Award 131 14,262 0.93 53.61 7,023 764,586
2019-09-05 2019-09-03 4 BG Bunge LTD
Common Stock
A - Award 131 14,131 0.94 53.08 6,953 750,073
2019-06-04 2019-06-03 4 BG Bunge LTD
Common Stock
A - Award 14,000 14,000
2019-03-21 2019-03-19 4 GPRE Green Plains Inc.
Common Stock
F - Taxes -1,011 74,570 -1.34 16.97 -17,157 1,265,453
2019-02-21 2019-02-19 4 GPRE Green Plains Inc.
Common Stock
A - Award 9,778 75,581 14.86 15.34 149,995 1,159,413
2019-02-21 2019-02-19 4 GPRE Green Plains Inc.
Common Stock
A - Award 9,127 65,803 16.10 15.34 140,008 1,009,418
2018-09-12 2018-09-11 4 GPRE Green Plains Inc.
Common Stock
F - Taxes -3,148 56,676 -5.26 16.90 -53,201 957,824
2018-03-21 2018-03-19 4 GPRE Green Plains Inc.
Common Stock
A - Award 11,019 59,824 22.58 18.15 199,995 1,085,806
2018-03-21 2018-03-19 4 GPRE Green Plains Inc.
Common Stock
A - Award 10,331 48,805 26.85 18.15 187,508 885,811
2017-11-07 2017-11-06 4 GPRE Green Plains Inc.
Common Stock
P - Purchase 3,027 38,474 8.54 17.00 51,459 654,058
2017-11-07 2017-11-06 4 GPRE Green Plains Inc.
Common Stock
P - Purchase 8,890 8,890 16.76 148,996 148,996
2017-11-07 2017-11-06 4 GPRE Green Plains Inc.
Common Stock
P - Purchase 18,083 18,083 16.76 303,071 303,071
2017-09-13 2017-09-11 4 GPRE Green Plains Inc.
Common Stock
A - Award 32,172 35,447 982.35 18.50 595,182 655,770
2017-09-13 3 GPRE Green Plains Inc.
Common Stock
6,550
2017-09-13 3 GPRE Green Plains Inc.
Common Stock
6,550
2017-09-13 3 GPP Green Plains Partners LP
Common Units
0
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)