U.S. equities were mixed Monday following Friday’s jobs report, which showed strong payroll growth and modest wage gains. The S&P 500 Index slipped 0.1%, the Dow Jones Industrial Average fell 0.6% and the Nasdaq Composite gave back 0.4%.

Yesterday’s after-hours news included quarterly earnings reports from Amphastar Pharmaceuticals Inc (NASDAQ:AMPH), Coupa Software Inc (NASDAQ:COUP) and Kronos Worldwide, Inc. (NYSE:

KRO).

Here’s what you should know:

Amphastar Pharmaceuticals Inc (AMPH)

Amphastar shares were higher yesterday as the company posted strong quarterly results.

For its fourth quarter, the specialty pharmaceutical company unveiled GAAP net income of $1.5 million, or 3 cents per share. its adjusted non-GAAP net income was $4.8 million, or 10 cents per diluted share.

Revenue for the period came in at $60.4 million, while net revenue for the full year amounted to $240.2 million. Full-year GAAP net income was $4.5 million, or 9 cents per diluted share, while adjusted non-GAAP net income was $18.2 million, or 38 cents per diluted share.

“2017 was a tremendous year for Amphastar,” Dr. Jack Zhang, Amphastar’s CEO, said. “The five approvals we received in 2017 put us in a position for strong growth in 2018 and are a reflection of the strength of our research and development capabilities.”

AMPH stock gained 2% after the bell Monday.

Coupa Software Inc (COUP)

Coupa Software stock was also higher on the company’s latest quarterly results.

The cloud solutions provider posted net revenue of $53.8 million for the period, which topped analysts’ expectations of $49 million, while also surging 41% compared to the year-ago quarter.

Coupa Software posted adjusted earnings of 2 cents per share, beating the Wall Street consensus estimate of a loss of 15 cents per share. In the year-ago quarter, the company reported a loss of 5 cents per share.

For its current quarter, the company is calling for a loss of 12 cents per share, which is in line with expectations. Coupa Software predicts revenue of about $51 million, $2 million above analysts’ guidance.

COUP shares popped 2.2% after hours yesterday.

Kronos Worldwide, Inc. (KRO)

Kronos Worldwide shares were sinking on the company’s earnings report.

The titanium dioxide pigments manufacturer reported fourth-quarter net income of $47.4 million, or 41 cents per share, topping the year-ago net income of $23.2 million, or 20 cents per share.

For the full year, the company earned $354.5 million, or $3.06 per share, topping the year-ago net income of $43.4 million, or 37 cents per share. Revenue came in at $453.3 million for Kronos Worldwide’s fourth quarter, 36% higher than in the year-ago quarter.

For the fiscal year 2017, the company reported revenue of $1.7 billion, marking a 27% increase compared to the year-ago quarter.

KRO stock plummeted 8% after Monday’s market close.

As of this writing, Karl Utermohlen did not hold a position on any of the aforementioned securities.