Activist Targets Americold Chair, Demanding Ouster and Full Sale

DALLAS, TX – March 30, 2026 – Investment firm Sieve Capital has launched an aggressive public campaign against Americold Realty Trust (NYSE: COLD), demanding the removal of its Chairman, Mark Patterson, and a complete review of the company's strategic alternatives, including a potential sale.

The activist shareholder went public after it says a private letter sent to the cold-storage giant's board of directors went unacknowledged. In a press release, Sieve Capital detailed what it calls "serious concerns pertaining to Mr. Patterson’s documented history of apparently problematic boardroom behavior and poor strategic decisions" at Americold and other public companies.

The move escalates pressure on Americold’s leadership, which is already grappling with significant stock underperformance and reported interest from potential buyers. Sieve is calling for the board to strip Patterson of his chairmanship and not nominate him for re-election at the upcoming annual shareholder meeting.

A History of Governance Concerns

At the heart of Sieve Capital's campaign are pointed allegations against Patterson's record as a corporate fiduciary. The activist firm highlights a staggering decline in Americold's shareholder value, noting total shareholder returns of approximately -50% during Patterson's tenure as chairman, which began in March 2019. An analysis of the company's stock performance confirms this, showing a drop of over 53% from March 2019 to the present.

Sieve's critique extends beyond Americold's stock chart, pointing to Patterson's past board service as a cause for alarm. The firm cites his tenure at Paramount Group, another real estate investment trust, where Patterson reportedly failed to receive a majority of votes cast by shareholders for his re-election in May 2021. According to company filings, he subsequently tendered his resignation as required, but was ultimately re-appointed to the board.

Furthermore, Sieve's release references public reports that the Securities and Exchange Commission (SEC) is investigating financial dealings between Patterson and Albert Behler, the former CEO of Paramount Group. These reports, which surfaced in late 2025, raised questions about previously undisclosed related-party transactions and executive compensation.

The activist also pointed to Patterson's role on the board of Digital Realty, suggesting a pattern of questionable governance. "We are concerned that Mr. Patterson has imported poor governance practices into the Company’s boardroom," Sieve stated, specifically noting the presence of what it calls "Patterson allies" on Americold's board.

Performance Under Pressure

While Sieve's campaign puts leadership conduct in the spotlight, it is Americold's financial underperformance that provides the foundation for the activist's arguments. The company's 53% stock price decline since March 2019 stands in stark contrast to the broader cold storage sector, which has experienced robust growth.

The industry has benefited from strong fundamentals, including limited supply and surging demand driven by online grocery sales. Over the past five years, refrigerated storage real estate has posted an average annual total return of over 14%. Against this backdrop, Americold's performance appears particularly weak. The company's market capitalization has fallen over 13% in the last year alone.

Financial filings paint a challenging picture. While Americold is the world's largest publicly traded REIT focused on temperature-controlled warehouses, it has struggled with profitability. The company was reportedly operating at a net loss as of March 2026, and its dividend, currently yielding over 8%, is not covered by earnings, raising concerns about its sustainability. In its most recent earnings report for the fourth quarter of 2025, Americold's management acknowledged that "sustained market headwinds are expected to pressure revenues and economic occupancy in 2026," forecasting a decrease in occupancy of 200 to 300 basis points.

A Boardroom with Interlocking Ties

Sieve Capital's concerns about governance are amplified by the composition of Americold's board. The activist specifically named Andrew "Andy" Power, the CEO of Digital Realty Trust, as one of Patterson's allies on the board. Patterson also serves as a director on the board of Digital Realty, creating an interlocking directorship that has drawn scrutiny. Power sits on Americold's audit and investment committees.

This public challenge from Sieve is not the only activist pressure Americold has faced recently. In December 2025, activist investor Ancora disclosed a stake in the company and also advocated for a strategic review, suggesting Americold could sell itself or divest non-core international assets to focus on its North American operations and reduce debt. The presence of multiple activists pushing for change suggests a growing shareholder consensus that the status quo is unacceptable.

A Strategic Crossroads

The central conflict now appears to be over the company's future path. Sieve Capital is forcefully arguing that the board must pivot from its current focus on "potential asset sales and joint ventures" to a comprehensive review of all strategic alternatives.

Sieve's push comes on the heels of media reports from late 2025 that Americold was fielding acquisition interest from private equity firms. These reports caused the company's stock to jump, indicating investor appetite for a potential deal. Sieve argues that a sale could provide a significant premium to the current depressed stock price and de-risk the investment for long-suffering shareholders.

The activist firm expressed deep skepticism about the board's current approach, suggesting that pursuing smaller transactions like joint ventures is a "short-sighted" strategy that could "entrench him [Patterson] and his allies" while failing to maximize shareholder value. Indeed, on its latest earnings call, Americold management outlined a plan to lower its leverage through potential joint ventures or non-strategic asset sales, a strategy that falls short of the full-scale review Sieve and others are demanding.

With its public campaign, Sieve Capital has put Americold's board in a difficult position. It must now publicly defend its chairman, its strategy, and its significant underperformance in a booming sector, all while navigating reported interest from potential suitors and pressure from multiple activist investors. The board's next moves will be closely watched by shareholders who are eager for a change in direction.