Featured below are companies that have experienced recent insider trading activity in the public market through their direct and indirect ownerships, including accounts they have control or direction over.

The list features insider transaction activity; it does not convey total ownership information as an insider may hold numerous accounts.

Keep in mind, when looking at transaction activities by insiders, purchasing activity may reflect perceived value in a security. Selling activity may or may not be related to a stock’s valuation; perhaps an insider needs to raise money for personal reasons. An insider’s total holdings should be considered because a sale may, in context, be insignificant if this person has a large remaining position in the company. I tend to put great weight on insider transaction activity when I see multiple insiders trading a company’s shares or units.

Listed below is a stock that has had recent buying activity in the public market reported by an insider.

On May 14, director Gilles Labbé invested over $900,000 in shares of CGI. He acquired 6,000 shares at an average cost per share of approximately $150.83, lifting the holdings in this particular account to 11,931 shares.

Mr. Labbé is the executive chairman of the board of Héroux-Devtek Inc. ( HRX-T ) and is the former president and chief executive officer of Héroux-Devtek.

On Jan. 30, CGI’s share price rallied to an intraday record high of $175.35.

Listed below are three stocks that have had recent selling activity in the public market reported by insiders.

On May 13 and 14, executive vice president and chief operating officer Mark Redd exercised his options, receiving 10,485 shares at an average cost per share of approximately US$49.32, and sold 10,485 shares at an average price per share of roughly US$79.48 with 15,978 shares remaining in this particular account. Net proceeds exceeded US$316,000, not including any associated transaction fees.

On May 23, Andrew Barnard sold 1,500 shares at an average price per share of approximately US$1662.53 leaving 51,016 shares in this particular account. Proceeds from the sale totaled more than US$2.4 million, excluding commission charges.

Mr. Barnard is the chairman of Fairfax Insurance Group.

On May 22, president of Shoppers Drug Mart Jeff Leger exercised his options, receiving 2,200 shares at a cost per share of $70.06, and sold 2,200 shares at a price per share of $225.00. Net proceeds totaled over $340,000, excluding any associated transaction fees.

That day, Mr. Leger also sold 2,000 shares at a price per share of $225.00 with proceeds from this sale totaling $450,000, not including commission charges.

After these transactions, this particular account held 2,445 shares.

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