WestExec Advisors has long operated as an exclusive Washington consulting firm known for its meteoric rise and lineup of heavy-hitter Democrats and former national security officials.

But its business is something of a black box. Because it technically doesn’t directly advocate on behalf of clients — i.e., lobby — WestExec doesn’t have to disclose who is paying them and for what.

Blue Light News, however, has gotten a peek at some clients that previously worked with WestExec in recent years before departing. They include software giant Palantir Technologies, Japanese investment company SoftBank Group, semiconductor manufacturer GlobalFoundries and South Korean conglomerate Samsung, according to six people directly familiar with the matter.

Each company had worked with WestExec for at least a few years, according to the people, who were granted anonymity to discuss sensitive information. All of the clients have ended their contracts since November.

Several of the companies that previously worked with WestExec have signed on with lobbying firms touting their supposed access to President Donald Trump — a reflection of anxiety within Washington’s power landscape over how to navigate an administration not particularly amenable to the ordinary ways of D.C.’s influence business.

While WestExec emphasizes that it is nonpartisan, its founders all worked in the Obama administration. Michèle Flournoy, Sergio Aguirre and Nitin Chadda are all co-founders who remain with the firm as managing partners. Former CIA director John Brennan is a principal and former Obama senior State department official Richard Stengel and former Bill Clinton Middle East envoy Amb. Dennis Ross are also senior advisers.

Biden also plucked several WestExec bigwigs — including co-founder Antony Blinken, Avril Haines and Jen Psaki — for posts in his administration. Those moves drew scrutiny at the time over potential conflicts of interest involving its unrevealed clients. POLITICO noted in 2020 that many of the administration picks were not bound by the Biden transition’s restrictions on hiring people who had lobbied in the past year.

Some of the clients that recently left WestExec said that they were specifically seeking connections with firms that have a more direct line to the Trump administration. One said it had a desire to “put our resources elsewhere.” Palantir and SoftBank have in recent months signed contracts with Miller Strategies, the lobbying firm headed up by top Trump fundraiser Jeff Miller. Samsung, meanwhile, is “actively seeking experts with strong ties to Trump,” according to the Korea Herald.

A WestExec spokesperson, who asked not to be named, said that because it’s not a lobbying shop, its business isn’t at the whim of which party controls Washington. The spokesperson said that WestExec provides analysis and strategic advice for companies trying to navigate a complicated geopolitical and policy landscape.

“WestExec remains one of the world’s leading strategic advisory firms — growing every year since our founding [in 2017] regardless of who occupies the White House. We are not a lobbying firm. Our dozens of principals and senior advisors — largely comprised of former senior government officials from both parties as well as military and industry leaders — provide insightful analysis and strategic counsel for companies trying to navigate a dynamic geopolitical, regulatory and policy landscape,” the spokesperson said in a statement.

“Of course, our substantial client roster evolves as corporate challenges are solved and needs change, but we had a record year in 2024 and are on pace for similar growth in 2025, having signed several new clients since the new year. That’s because good business advice isn’t partisan.”

A person familiar with the firm said Samsung and GlobalFoundries had a change in priorities that led those clients to leave, and that Palantir’s departure was a mutual decision. A person familiar with SoftBank’s decision said the company changed consultants to align with the new administration.

While WestExec officials insist their business doesn’t depend on Democrats being in power, they have been fielding calls from Republican-linked lobbying firms inquiring about forging a partnership, according to the person familiar with the firm.

A spokesperson for Palantir declined to comment, and spokespeople for GlobalFoundries, Samsung and SoftBank didn’t respond to requests for comment.

It isn’t a shock that companies would part ways with a traditionally Democratic-leaning firm in favor of doing business with Republican-aligned outfits. A handful of lobbying firms linked to former President Joe Biden have lost significant business since the election, as POLITICO Influence has previously reported. But the confidentiality surrounding the clients of WestExec and other strategic advisory firms makes the revelation of departed clients notable.