Given the sheer number of players that they potentially had available, the Baltimore Orioles were always going to be among the busier teams at the trade deadline, even if they weren't going to be willing/able to put headliner Felix Bautista on the trading block. However, it wasn't just players on their roster that influenced the trade deadline, as several former Orioles were on the move as well.
The Orioles have somewhat famously avoided making many trades for roster upgrades, with the Corbin Burnes trade being an exception to the rule. That limits the number of former players floating around the league, although there are a few that left in free agency
Here are all the former Orioles players we could find who were moved at the trade deadline
Danny Coulombe
Danny Coulombe was a very useful and effective reliever for the Orioles in 2023 and 2024, although he did miss a bunch of time last year after needing surgery to remove bone chips from his elbow. Baltimore ultimately decided to decline their option on him, and he landed with the Twins on a one-year deal. That turned out to be a steal for Minnesota as he has posted a 1.16 ERA in 40 appearances before the Twins began their sell-off and traded Coulombe to the Rangers.
Adam Frazier
While his tenure was just one season (2023), Adam Frazier made his mark in Baltimore as he hit .300 that year while being extremely highly regarded in the Orioles' clubhouse. Frazier played 2024 in Kansas City before moving on to the Pirates this season. KC liked having him around so much that the Royals acquired Frazier again from Pittsburgh a couple of weeks before the actual deadline.
Austin Slater
Austin Slater only played 33 games for the Orioles last year, but he still counts for our purposes here. Baltimore decided to let Slater walk after a meh showing, and he ended up with the White Sox on a one-year deal. A torn meniscus cost him time, but it didn't deter the Yankees from trading for him.