Berkshire now owns 73.98 million Phillips 66 shares worth roughly $5.9 billion.
The Pennsylvania-based refining and pipeline company reported a $168 million net income gain for the final three months of the year, down from $805 million.
LyondellBasell is planning to spend up to $4 billion in capital through 2020 along the Gulf Coast, mostly in Texas.
Dow, the largest employer in Brazoria County, is planning to merge into the newly formed DowDuPont by the end of the year.
Tesoro, which operates six refineries in the western U.S., generated $1.5 billion in profits for 2015, up from $872 million in 2014.
San Antonio-based Valero Energy Corp. reported a 9.5 percent drop in fourth quarter earnings that strongly outperformed what analysts were expecting from nation’s largest independent oil refiner.
U.S. refiners have fared better than other parts of the energy industry during the downturn, as cheaper crude prices have boosted their margins
A refinery spokesman said no one was injured and there was no cause for alarm following the 3 p.m. outage. Non-essential personnel were “dismissed” from the facility.
Berkshire filed documents with the Securities and Exchange Commission on Friday that disclosed purchases of another 1.6 million Phillips 66 shares.
The shipment was originally secluded to depart in late January.