Cement Merger Blocked Unless Plants Are Sold Off in California
Published Date: 6/11/2026
Notice
Summary
The U.S. government is stepping in to stop Taiheiyo Cement and CalPortland from buying Vulcan Material’s ready-mix concrete plants in California because it could hurt competition. To keep things fair, the companies must sell off several plants, trucks, and property rights in Escondido, Oceanside, and Lakeside. People have 60 days to share their thoughts before the deal is finalized, keeping the concrete market strong and fair.
Analyzed Economic Effects
3 provisions identified: 2 benefits, 1 costs, 0 mixed.
Court-ordered divestiture of local plants
The Department of Justice and State of California required Taiheiyo/CalPortland and Vulcan to sell specific ready-mix concrete assets in San Diego County, including plants at 550 North Tulip Street (Escondido), 1050 West Airport Road (Oceanside), lease interests in the Lakeside plant at 12494 CA-67, fifteen (15) CalPortland ready-mix trucks, and related licenses and records. Defendants must divest these assets to Holliday Rock or another U.S. buyer within 15 calendar days after the Court's entry of the Asset Preservation and Hold Separate order, subject to United States approval and possible extensions totaling up to 90 calendar days.
Acquisition would likely raise local concrete prices
The government alleges CalPortland's planned purchase of Vulcan's California ready-mix assets for approximately $712 million would combine two of the largest suppliers in San Diego County, giving them a combined market share of over 50 percent. The Complaint says that, absent divestiture, the deal would likely lead to higher prices and reduced product quality and service for ready-mix concrete buyers in San Diego County in violation of Section 7 of the Clayton Act.
Protections and hiring rules for plant employees
The Final Judgment requires Defendants to help an approved buyer hire Relevant Personnel from the Escondido, Oceanside, and Lakeside plants, provide personnel lists within 10 business days, and, for employees who join the buyer within 180 days of the divestiture, waive non-competes, vest and pay prorated bonuses and any accrued compensation, and provide comparable benefits. Defendants also must not solicit re-hires for 6 months after divestiture for employees hired by the buyer within 3 months of that date.
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Key Dates
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