Here are the week’s reports of trading in the stocks of local companies or in the companies that have significant local operations, by directors and executives of the companies:

Cameron International Corp.: Erikson, Sheldon R., director, sold 36,256 shares of common at $39.29 each on Nov. 4 and now directly and indirectly holds 2,402,860.

Cummins Inc.: Hunt, Marsha L., officer, sold 500 shares of common at $46.50 each on Nov. 4 and now directly and indirectly holds 22,874.

E. I. Du Pont De Nemours&Co: Johnson, W. Donald, officer, sold 1,399 shares of common at $32.74 each on Oct. 29 and now directly and indirectly holds 52,158.

First Niagara Financial Group: Philip, George M., director, purchased 68 shares of common at $13.30 each on Oct. 29 and now directly and indirectly holds 18,950. Baker, Thomas E., director, purchased 272 shares of common at $13.30 each on Oct. 29 and now directly and indirectly holds 27,320. Judge, Daniel W., director, purchased 135 shares of common at $13.30 each on Oct. 29 and now directly and indirectly holds 123,564.

FMC Corp.: Walter, William G., chief executive officer, exercised an option for 40,000 shares of common at $17 each on Nov. 2, immediately sold 40,000 shares of common at $51.05 each, and now directly and indirectly holds 115,152.

Gannett Co.: Horning, Roxanne V., officer, sold 11 shares of common at $9.76 each on Nov. 2 and now directly and indirectly holds 8,730. Williams, John A., officer, sold 13 shares of common at $9.76 each on Nov. 2 and now directly and indirectly holds 11,650. Dubow, Craig A., chief executive officer, sold 55 shares of common at $9.76 each on Nov. 2 and now directly and indirectly holds 44,175.

Keycorp: Hancock, Peter D., officer, purchased 17,400 shares of common at $5.40 each on Oct. 30 and now directly and indirectly holds 71,511.

M&TBank Corp.: Pereira, Jorge G, officer and director, sold 42,300 shares of common between $65.46 and $69.05 each between Oct. 26 and Oct. 29 and now directly and indirectly holds 1,443,670.

Northrop Grumman Corp.: Sugar, Ronald D., chief executive officer, exercised an option for 13,334 shares of common at $39.28 each on Oct. 29, immediately sold 13,334 shares of common at $50.18 each, and now directly and indirectly holds 674,229.

NRG Energy: Crane, David W., chief executive officer, purchased 5,000 shares of common between $23.16 and $23.18 each on Nov. 2 and now directly and indirectly holds 355,446.

Praxair Inc.: Leboeuf, Raymond W., director, exercised an option for 5,000 shares of common at $20.84 each on Oct. 30, immediately sold 5,000 shares of common at $81.70 each, and now directly and indirectly holds 2,000.

Prepared by First Call/Thompson Financial of Boston, Mass., from Securities and Exchange Commission filings.