Stocks were relatively quiet after the bell Monday despite a flowering earnings season, but among the winners was Robbins & Myers ( RBN).

The Dayton, Ohio, company, which makes equipment for the pharmaceutical, energy and industrial markets, said fiscal fourth-quarter earnings jumped 64.1% year-over-year to $1.05 a share, excluding items. Analysts polled by Thomson Financial were looking for just 84 cents a share. Robbins stock added $3.66, or 6%, to $64.75.

Trucking company Werner Enterprises ( WERN), based in Omaha, Neb., pocketed third-quarter income of $21.9 million, or 30 cents a share, a penny over the average Street estimate. Shares, however, were recently trading lower 0.5% to $17.50 in choppy post-bell trading.

Zila ( ZILA), which makes oral-disease treatments, was in the green after narrowing its fourth-quarter continuing-operations loss to $5.8 million, or 9 cents a share, vs. 17 cents a share last year. The sole analyst's estimate called for a loss of a nickel a share, excluding items. Shares of the Phoenix-based company added 13.9% to $1.15 in light trading.

On the other hand, OSI Pharmaceuticals ( OSIP) slipped after reporting an "unusually high" rate of expiring product returns for its Tarceva cancer treatment, which necessitated about a $13 million reserve adjustment in the third quarter. OSI nonetheless reaffirmed its prior full-year Tarceva sales guidance of between $855 million and $860 million. Still, OSI shares fell 1.6% to $35.10.

Genentech ( DNA), Tarceva's U.S. distributor, was off 1% to $76.76, even though the South San Francisco, Calif., biotech posted a non-GAAP profit of 73 cents a share in that quarter. That's a penny over earnings targets. Revenue, at $2.91 billion, was a hair under.

More from Investing

REPLAY: Jim Cramer on How to Navigate the Stock Market Amid Tariff Worries

REPLAY: Jim Cramer on How to Navigate the Stock Market Amid Tariff Worries

Will Kraft Heinz Buy Pepsico or Mondelez?

Will Kraft Heinz Buy Pepsico or Mondelez?

Jim Cramer: 4 Stocks Could Get Throttled By a 'Knock Down Drag Out' With China

Jim Cramer: 4 Stocks Could Get Throttled By a 'Knock Down Drag Out' With China

Why Starbucks Latest Data Reveal Should Worry Investors

Why Starbucks Latest Data Reveal Should Worry Investors

Starbucks Sets Latest Plan to Recaffeinate Shares

Starbucks Sets Latest Plan to Recaffeinate Shares