Introduction

This page provides a comprehensive analysis of the known insider trading history of Joseph Ian Malchow. 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 Joseph Ian Malchow has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:ENVX / Enovix Corporation Director 438,263
US:ENPH / Enphase Energy, Inc. Director 63,960
US:LFG / Archaea Energy Inc - Class A 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 Joseph Ian Malchow. 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 Joseph Ian Malchow 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
2025-06-13 2025-06-12 4 ENVX Enovix Corp
Common Stock
A - Award 22,543 438,263 5.42
2025-05-16 2025-05-14 4 ENPH Enphase Energy, Inc.
Common Stock
A - Award 5,179 63,960 8.81
2024-06-17 2024-06-13 4 ENVX Enovix Corp
Common Stock
A - Award 15,128 415,720 3.78
2024-05-17 2024-05-15 4 ENPH Enphase Energy, Inc.
Common Stock
A - Award 2,165 58,781 3.82
2024-03-29 2023-06-23 4/A ENVX Enovix Corp
Common Stock
A - Award 7,251 400,592 1.84
2024-03-29 2023-06-23 4/A ENVX Enovix Corp
Common Stock
A - Award 19,941 393,341 5.34
2023-06-27 3 ENVX Enovix Corp
Common Stock
373,400
2023-06-27 3 ENVX Enovix Corp
Common Stock
4,400
2023-06-27 3 ENVX Enovix Corp
Common Stock
1,300
2023-06-27 2023-06-23 4 ENVX Enovix Corp
Common Stock
A - Award 6,811 398,943 1.74
2023-06-27 2023-06-23 4 ENVX Enovix Corp
Common Stock
A - Award 18,732 392,132 5.02
2023-05-19 2023-05-17 4 ENPH Enphase Energy, Inc.
Common Stock
A - Award 1,526 56,616 2.77
2022-12-28 2022-12-28 4 LFG Archaea Energy Inc.
Class B Common Stock
D - Sale to Issuer -136,674 0 -100.00
2022-12-28 2022-12-28 4 LFG Archaea Energy Inc.
Class A Common Stock
D - Sale to Issuer -8,715 0 -100.00 26.00 -226,590
2022-11-18 2022-11-16 4 ENPH Enphase Energy, Inc.
Common Stock
S - Sale -12,500 55,090 -18.49 310.00 -3,875,000 17,077,900
2022-06-17 2022-06-15 4 ENPH Enphase Energy, Inc.
Common Stock
S - Sale -12,500 67,590 -15.61 188.00 -2,350,001 12,706,927
2022-05-20 2022-05-18 4 ENPH Enphase Energy, Inc.
Common Stock
A - Award 1,600 80,090 2.04
2022-05-13 2022-05-11 4 LFG Archaea Energy Inc.
Warrants
J - Other 83,968 83,968
2022-05-13 2022-05-11 4 LFG Archaea Energy Inc.
Class A Units of LFG Acquisition Holdings LLC
J - Other 106,674 136,674 355.58
2022-05-13 2022-05-11 4 LFG Archaea Energy Inc.
Class B Common Stock
J - Other 106,674 136,674 355.58
2022-03-15 2022-03-14 4 ENPH Enphase Energy, Inc.
Common Stock
S - Sale -4,460 78,490 -5.38 156.05 -695,983 12,248,372
2022-01-03 2022-01-01 4 LFG Archaea Energy Inc.
Class A Common Stock
A - Award 6,838 8,715 364.30
2022-01-03 2021-12-29 4 LFG Archaea Energy Inc.
Class A Common Stock
A - Award 1,877 1,877
2021-09-17 2021-09-15 4 LFG Archaea Energy Inc.
Class A Units of LFG Acquisition Holdings LLC
C - Conversion 30,000 30,000
2021-09-17 2021-09-15 4 LFG Archaea Energy Inc.
Class B Units of LFG Acquisition Holdings LLC
C - Conversion -30,000 0 -100.00
2020-12-11 2020-12-11 4 ENPH Enphase Energy, Inc.
Common Stock
S - Sale -3,000 82,950 -3.49 143.90 -431,700 11,936,513
2020-10-21 3 RICE Rice Acquisition Corp.
No securities beneficially owned.
0
2020-06-16 2020-06-15 4 ENPH Enphase Energy, Inc.
Common Stock
S - Sale -6,250 85,950 -6.78 50.51 -315,688 4,341,334
2020-03-19 3 ENPH Enphase Energy, Inc.
Common Stock
184,400
2020-03-19 3 ENPH Enphase Energy, Inc.
Common Stock
184,400
2020-03-19 3 ENPH Enphase Energy, Inc.
Common Stock
184,400
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)