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It should come as no huge surprise that insiders are ringing the cash register now. With all the major indices plowing to record highs, it is inevitable that insiders, especially those with large holdings, would take some profits.

We scanned our 24/7 research database and saw some gigantic sales this week. Investors who own any of these names may want to check their own profit and loss statements to see if it might be time to lighten up as well.

McGraw Hill Financial Inc. (NYSE: MHFI) is up more than 50% in the past year, and one director hit the bid on a sale of a whopping 500,000 shares. All of the shares were sold at a price of $82.66 for a gigantic payday of $41.3 million. The company provides a variety of credit ratings, benchmarks and analytics to capital and commodity markets worldwide. Shares were trading Thursday at $84.05.

Sinclair Broadcast Group Inc. (NASDAQ: SBGI) jumped last week to 52-week highs and a director, who is also a 10% owner, stepped up to the sell window. Robert Smith sold 138,800 shares between $35.00 and $35.61 and took home a cool $4.9 million. The stock was trading Thursday at $35.89.

Kilroy Realty Corp. (NYSE: KRC) had two of its C-suite executives selling some of the company’s stock. The chief operating officer (COO) and the chief executive officer (CEO) sold a combined 75,000 shares at prices ranging from $61.79 to $62.13. They pocketed a very solid $4.6 million. Kilroy was trading Thursday at $61.89, just shy of a 52-week high for the stock.

G-III Apparel Group Ltd. (NASDAQ: GIII) also saw some of the company’s top executive step up to the sell window to dispose of shares. The CEO, COO and the vice chairman of the board sold a combined 48,607 shares. The reported sales prices for the stock ranged from $80.57 to $83.12 per share. The executives took home a nice payday of $4 million. The stock was trading Thursday at $83.56.

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Ameriprise Financial Inc. (NYSE: AMP) also saw top executives selling stock. The CEO and a unit president sold a total of 32,195 shares. They, like many others, were selling stock near 52-weeks highs, as the shares sold for prices between $119.50 and $120.12. They did leave some on the table however, as Ameriprise was trading Thursday at $122.64.

Genesco Inc. (NYSE: GCO) wraps up the large insider selling this week, as the company saw two executives also selling into the market strength. The CEO and a senior vice president sold a total of 35,105 shares at prices listed from $80.26 to $81.19. The pair had a very solid payday, as their combined proceeds equaled $2.8 million. Shares were trading higher Thursday at $82.46.

It really should come as no shock that so many top executives are taking advantage of the market strength to liquidate some of their holdings. Many top corporate officers are compensated with stock, and sometimes they are overweighted to holdings in their own company. Given the huge market rally and so many stocks at or near 52-week highs, most of these sales are not surprising.