Verastem, Inc.
US ˙ NasdaqCM ˙ US92337C2035

Introduction

This page provides a comprehensive analysis of the known insider trading history of Daniel Calkins. 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.

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Companies with Reported Insider Positions

The SEC filings indicate Daniel Calkins has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:VSTM / Verastem, Inc. Chief Financial Officer 109,920
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Daniel Calkins. 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 VSTM / Verastem, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in VSTM / Verastem, 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 (%)
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.

VSTM / Verastem, Inc. Insider Trades
Insider Sales VSTM / Verastem, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in VSTM / Verastem, 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 (%)
2025-06-23 VSTM Calkins Daniel 25 4.7100 25 4.7100 118 4 4.1500 -13 -11.32
2025-06-20 VSTM Calkins Daniel 4,110 5.1300 4,110 5.1300 21,084
2025-05-20 VSTM Calkins Daniel 11,143 8.1300 11,143 8.1300 90,593
2025-03-24 VSTM Calkins Daniel 26 7.0400 26 7.0400 183
2025-03-20 VSTM Calkins Daniel 65 6.8900 65 6.8900 448
2025-01-06 VSTM Calkins Daniel 6 6.9400 6 6.9400 42
2024-12-24 VSTM Calkins Daniel 28 3.9100 28 3.9100 109
2024-12-20 VSTM Calkins Daniel 65 4.3400 65 4.3400 282
2024-10-07 VSTM Calkins Daniel 6 2.8600 6 2.8600 17
2024-09-24 VSTM Calkins Daniel 28 2.6800 28 2.6800 75
2024-09-20 VSTM Calkins Daniel 65 2.8000 65 2.8000 182
2024-07-09 VSTM Calkins Daniel 7 2.6200 7 2.6200 18
2024-06-24 VSTM Calkins Daniel 28 3.1500 28 3.1500 88
2024-06-20 VSTM Calkins Daniel 67 3.1600 67 3.1600 212
2024-04-05 VSTM Calkins Daniel 6 10.8700 6 10.8700 65
2024-03-25 VSTM Calkins Daniel 25 12.0200 25 12.0200 300
2024-03-20 VSTM Calkins Daniel 55 11.0700 55 11.0700 609
2024-01-05 VSTM Calkins Daniel 6 8.5000 6 8.5000 51
2023-12-26 VSTM Calkins Daniel 25 8.0800 25 8.0800 202
2023-12-20 VSTM Calkins Daniel 57 7.9300 57 7.9300 452
2023-10-05 VSTM Calkins Daniel 5 7.3000 5 7.3000 36
2023-09-25 VSTM Calkins Daniel 25 9.4000 25 9.4000 235
2023-09-21 VSTM Calkins Daniel 232 9.3100 232 9.3100 2,160
2023-07-06 VSTM Calkins Daniel 5 8.0200 5 8.0200 40
2023-06-26 VSTM Calkins Daniel 26 8.1700 26 8.1700 212
2023-04-05 VSTM Calkins Daniel 75 0.3700 6 4.4400 28
2023-03-24 VSTM Calkins Daniel 378 0.4200 32 5.0400 159
2023-01-05 VSTM Calkins Daniel 74 0.4300 6 5.1600 32
2022-12-27 VSTM Calkins Daniel 1,246 0.3300 104 3.9600 411

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

VSTM / Verastem, Inc. Insider Trades
Insider Trading History

This table shows the complete list of insider trades made by Daniel Calkins 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
2025-06-24 2025-06-23 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -25 109,920 -0.02 4.71 -118 517,723
2025-06-24 2025-06-20 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -4,110 109,945 -3.60 5.13 -21,084 564,018
2025-05-20 2025-05-20 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -11,143 114,055 -8.90 8.13 -90,593 927,267
2025-05-20 2025-05-16 4 VSTM Verastem, Inc.
Common Stock 		A - Award -38,850 125,198 -23.68
2025-03-24 2025-03-24 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -26 86,348 -0.03 7.04 -183 607,890
2025-03-24 2025-03-20 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -65 86,374 -0.08 6.89 -448 595,117
2025-01-14 2025-01-10 4 VSTM Verastem, Inc.
Common Stock 		A - Award 38,800 86,439 81.45
2025-01-08 2025-01-06 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -6 47,639 -0.01 6.94 -42 330,615
2024-12-26 2024-12-24 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -28 47,368 -0.06 3.91 -109 185,209
2024-12-26 2024-12-20 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -65 47,396 -0.14 4.34 -282 205,699
2024-10-09 2024-10-07 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -6 47,461 -0.01 2.86 -17 135,738
2024-09-24 2024-09-24 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -28 47,467 -0.06 2.68 -75 127,212
2024-09-24 2024-09-20 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -65 47,495 -0.14 2.80 -182 132,986
2024-07-11 2024-07-09 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -7 47,560 -0.01 2.62 -18 124,607
2024-06-26 2024-06-24 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -28 47,290 -0.06 3.15 -88 148,964
2024-06-20 2024-06-20 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -67 47,318 -0.14 3.16 -212 149,525
2024-06-20 2024-06-18 4 VSTM Verastem, Inc.
Common Stock 		A - Award 38,850 47,385 455.18
2024-04-08 2024-04-05 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -6 8,535 -0.07 10.87 -65 92,775
2024-03-27 2024-03-25 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -25 8,541 -0.29 12.02 -300 102,663
2024-03-21 2024-03-20 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -55 8,566 -0.64 11.07 -609 94,826
2024-01-09 2024-01-05 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -6 8,621 -0.07 8.50 -51 73,278
2023-12-28 2023-12-26 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -25 8,350 -0.30 8.08 -202 67,468
2023-12-21 2023-12-20 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -57 8,375 -0.68 7.93 -452 66,414
2023-10-10 2023-10-05 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -5 8,432 -0.06 7.30 -36 61,554
2023-09-25 2023-09-25 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -25 8,437 -0.30 9.40 -235 79,308
2023-09-25 2023-09-21 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -232 8,462 -2.67 9.31 -2,160 78,781
2023-07-10 2023-07-06 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -5 8,694 -0.06 8.02 -40 69,726
2023-06-28 2023-06-26 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -26 8,422 -0.31 8.17 -212 68,808
2023-04-06 2023-04-05 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -75 101,397 -0.07 0.37 -28 37,517
2023-03-28 2023-03-24 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -378 101,472 -0.37 0.42 -159 42,618
2023-01-09 2023-01-05 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -74 98,517 -0.08 0.43 -32 42,362
2022-12-29 2022-12-27 4 VSTM Verastem, Inc.
Common Stock 		S - Sale -1,246 98,591 -1.25 0.33 -411 32,535
2022-11-08 3 VSTM Verastem, Inc.
Common Stock 		99,837
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)