Pharma-Bio Serv, Inc.
US ˙ OTCPK

Introduction

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

Security Title Latest Reported Holdings
US:PBSV / Pharma-Bio Serv, Inc. Director 54,203
US:ENZ / Enzo Biochem, Inc. Director 335,780
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Dov Perlysky. 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 PBSV / Pharma-Bio Serv, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in PBSV / Pharma-Bio Serv, 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.

PBSV / Pharma-Bio Serv, Inc. Insider Trades
Insider Sales PBSV / Pharma-Bio Serv, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in PBSV / Pharma-Bio Serv, 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.

PBSV / Pharma-Bio Serv, Inc. Insider Trades
Insider Trading History

This table shows the complete list of insider trades made by Dov Perlysky 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
2023-03-28 2023-03-24 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -12,991 54,203 -19.33 1.17 -15,199 63,418
2023-03-28 2023-03-24 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 20,000 67,194 42.38 0.76 15,200 51,067
2023-03-28 2023-03-24 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -17,094 47,194 -26.59 1.17 -20,000 55,217
2023-03-28 2023-03-24 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 20,000 64,288 45.16 1.00 20,000 64,288
2022-01-12 2022-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
A - Award 20,000 20,000
2022-01-05 2022-01-04 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
M - Exercise -10,000 0 -100.00
2022-01-05 2022-01-04 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
M - Exercise -20,000 0 -100.00
2022-01-05 2022-01-04 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -5,049 44,288 -10.23 1.03 -5,200 45,617
2022-01-05 2022-01-04 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 10,000 49,337 25.42 0.52 5,200 25,655
2022-01-05 2022-01-04 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -17,670 39,337 -31.00 1.03 -18,200 40,517
2022-01-05 2022-01-04 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 20,000 57,007 54.04 0.91 18,200 51,876
2021-01-13 2021-01-11 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire Common Stock)
A - Award 77,101 335,780 29.81
2021-01-12 2021-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock option
A - Award 20,000 20,000
2021-01-05 2021-01-04 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
M - Exercise -20,000 0 -100.00
2021-01-05 2021-01-04 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -13,103 42,207 -23.69 1.45 -18,999 61,200
2021-01-05 2021-01-04 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 20,000 55,310 56.64 0.95 19,000 52,544
2020-04-28 2020-04-23 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire Common Stock)
A - Award 83,333 258,679 47.52
2020-01-14 2020-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
A - Award 20,000 20,000
2019-01-18 2019-01-14 4 ENZ ENZO BIOCHEM INC
Stock option (to acquire common stock)
M - Exercise -64,286 175,346 -26.83
2019-01-18 2019-01-14 4 ENZ ENZO BIOCHEM INC
Common Stock
M - Exercise 9,184 65,787 16.23 2.70 24,797 177,625
2019-01-14 2019-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
A - Award 20,000 20,000
2019-01-04 2019-01-03 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire common stock)
A - Award 94,607 239,632 65.23
2018-10-22 2018-10-18 4 ENZ ENZO BIOCHEM INC
Common Stock
P - Purchase 10,000 266,235 3.90 3.50 35,000 931,822
2018-10-15 2018-10-15 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
M - Exercise -10,000 10,000 -50.00
2018-10-15 2018-10-15 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -5,200 30,110 -14.73 1.00 -5,200 30,110
2018-10-15 2018-10-15 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 10,000 35,310 39.51 0.52 5,200 18,361
2018-08-20 2018-04-13 4 ENZ ENZO BIOCHEM INC
Common Stock
J - Other 81,855 779,692 11.73
2018-08-20 2018-04-12 4 ENZ ENZO BIOCHEM INC
Common Stock
J - Other 3,139 697,837 0.45
2018-01-12 2018-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock Options
A - Award 20,000 20,000
2018-01-09 2018-01-05 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire common stock)
A - Award 36,860 276,492 15.38
2017-11-02 2017-10-31 4 ENZ ENZO BIOCHEM INC
Stock option (to acquire common stock)
M - Exercise -59,455 239,632 -19.88 2.88 -171,230 690,140
2017-11-02 2017-10-31 4 ENZ ENZO BIOCHEM INC
Common Stock
S - Sale -42,000 642,237 -6.14 9.81 -412,020 6,300,345
2017-11-02 2017-10-31 4 ENZ ENZO BIOCHEM INC
Common Stock
M - Exercise 59,455 684,237 9.52 2.88 171,230 1,970,603
2017-01-12 2017-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
A - Award 20,000 20,000
2017-01-10 2017-01-05 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire common stock)
A - Award 41,632 299,087 16.17
2017-01-04 2017-01-01 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
M - Exercise -10,000 0 -100.00
2017-01-04 2017-01-01 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -7,071 25,310 -21.84 0.99 -7,000 25,057
2017-01-04 2017-01-01 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 10,000 32,381 44.68 0.70 7,000 22,667
2016-01-21 2016-01-06 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire common stock)
A - Award 63,291 257,455 32.60
2016-01-11 2016-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
A - Award 20,000 20,000
2016-01-05 2016-01-02 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
M - Exercise -10,000 0 -100.00
2016-01-05 2016-01-02 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -2,600 22,381 -10.41 1.00 -2,600 22,381
2016-01-05 2016-01-02 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 10,000 24,981 66.75 0.26 2,600 6,495
2015-03-24 2015-01-01 4 ENZ ENZO BIOCHEM INC
COMMON STOCK
J - Other 40,872 40,872
2015-03-24 2015-01-01 4 ENZ ENZO BIOCHEM INC
COMMON STOCK
J - Other 3 3
2015-03-24 2015-01-01 4 ENZ ENZO BIOCHEM INC
COMMON STOCK
J - Other 1,923 1,923
2015-03-24 2015-01-01 4 ENZ ENZO BIOCHEM INC
COMMON STOCK
J - Other -416,589 109,237 -79.23
2015-01-23 2015-01-21 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire common stock)
A - Award 70,423 134,709 109.55
2015-01-13 2015-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
A - Award 20,000 20,000
2015-01-05 2015-01-02 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
M - Exercise -10,000 0 -100.00
2015-01-05 2015-01-02 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -2,615 14,981 -14.86 1.30 -3,400 19,475
2015-01-05 2015-01-02 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 10,000 17,596 131.65 0.34 3,400 5,983
2014-01-22 2014-01-17 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire common stock)
A - Award 64,286 64,286
2014-01-17 2014-01-10 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
A - Award 20,000 20,000
2014-01-06 2014-01-02 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
M - Exercise -10,000 0 -100.00
2014-01-06 2014-01-02 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
F - Taxes -2,404 7,596 -24.04 2.08 -5,000 15,800
2014-01-06 2014-01-02 4 PBSV Pharma-Bio Serv, Inc.
Common Stock
M - Exercise 10,000 10,000 0.50 5,000 5,000
2013-01-23 2013-01-17 4 ENZ ENZO BIOCHEM INC
Stock Option (to acquire Common Stock)
A - Award 59,455 59,455
2013-01-04 2013-01-02 4 PBSV Pharma-Bio Serv, Inc.
Stock Option
A - Award 10,000 10,000
2012-09-17 3 ENZ ENZO BIOCHEM INC
Common Stock
19,964
2012-09-17 3 ENZ ENZO BIOCHEM INC
Common Stock
30,000
2012-09-17 3 ENZ ENZO BIOCHEM INC
Common Stock
525,826
2012-09-17 3 ENZ ENZO BIOCHEM INC
Common Stock
45,000
2012-01-05 2012-01-03 4 PBSV.PK Pharma-Bio Serv, Inc.
Stock Option
A - Award 10,000 10,000
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)