Bump

It’s difficult to say with certainty, but I’d first determine if it was planted too deep. Can you provide a closeup of tree-ground contact? Did you plant it?

What is the device near the stem? Solar lighting?

i would have rubbed off all the trunk sprouts.. when they were small enough to do so ... now you might have to clip them ... i want all the energy focused above ...

i would remove all the dead branches ...

and then i would sit back for about 10 years.. at which time it will fill in nicely ... there will be no instant response .. in tree time.. with such ... but it will happen ...

for future reference.. smaller trees transplant with much lesser stress.. and recover and get growing much faster.. usually outgrowing the larger transplant.. in 5 years or so ... so if you opt out.. or what to plant other trees.. go smaller.. save money.. save stress.. yours and the trees ...

otherwise.. what maack said ... ken

Looks like it froze back - something traumatic like that happened.

Where are you? The west/Rockies had some terrible early and late freezes this year.