Lou Lamoriello finally had transactions to announce on Monday. And he did not have much patience for the idea that the Islanders have faltered in their failure to make any additions since the draft. 

“There’s no disappointment [with] where we’re at because we feel very good about where we are, or we would have made drastic changes last year if we didn’t feel good about the group we have or what we’re capable of doing,” the Islanders general manager said. “I say that with comfortability. I say that with confidence. 

“I’m looking forward to getting back at it and maybe proving everybody wrong.” 

The occasion for Lamoriello making his first public comments since early July was not the Islanders adding an unrestricted free agent but the team locking up its three restricted free agents. Defensemen Noah Dobson and Alexander Romanov both signed three-year deals at $4 million and $2.5 million average annual value, respectively, industry sources told The Post. Forward Kieffer Bellows signed a one-year deal for $1.2 million, per the website CapFriendly. 

That leaves the Islanders, who whiffed on big-name free agents Johnny Gaudreau and Nazem Kadri, with approximately $2.68 million in cap space going into training camp, which opens on Sept. 21. 

Lamoriello, who orchestrated the shocking firing of Barry Trotz after the team’s disappointing 37-35-10 record resulted in missing the postseason last season, insisted that he had no qualms about bringing back — in essence — the same roster that fell short last season. 

“There’s a lot to be excited about,” he said. “And I know everyone looks at, if something isn’t done then it’s not good. Sometimes some of the best transactions to make are the ones you don’t make.” 

That is to say, he will be making no apologies. Lamoriello has his beliefs. Those won’t be changing. 

“It starts with our goaltending, goes through our defense, then goes through our forwards,” he said. “I’m a goal-differential type of person. You win hockey games by scoring more goals, it doesn’t matter how many, it’s differential that allows that to happen. … I feel very good about this hockey team.” 

Lamoriello did leave the door open to a move between now and the start of training camp, should the opportunity present itself. But the likelihood of something like that seems low given that most of the league’s business has been long concluded. 

Going into the offseason, Lamoriello had made clear a desire to upgrade the team’s forward group, which struggled for much of last season, via hockey trades. None came to fruition, though Lamoriello said he explored “many options.” 

“When we hear the word disappointment, I wonder what that is,” he said. “Because free agents have to make decisions and also teams have to make decisions. And if you’re interested in a player or players, it has to be the right cap fit, has to be the right role fit and all of those things come in. Anybody can look at it through any sets of eyes they like.” 

For him, the viewpoint is optimistic. But outside the walls of the Islanders’ own facility, Lamoriello might be lonely in that opinion. 

After the massive failure that was last season, when the Islanders were out of the playoff race by February after coming in with Stanley Cup hopes, the franchise is at something of a crossroads. Proving that last year was an aberration is vital, as the core that brought it to two consecutive conference finals is aging. There is also the added pressure of selling seats at UBS Arena while the franchise celebrates its 50th anniversary. 

“This is really the first season at UBS Arena,” Lamoriello said, referencing the rocky start that knocked the Islanders on their heels before they played a home game last year. 

Dobson summed it all up with a sentiment quite similar to what players expressed throughout the back half of last season. 

“I think inside the locker room, we love the group we have,” he said. 

When the season starts, though, it will be about proving what that group can do to those who aren’t a part of it.