"They said based upon current turnaround times, we should hear back on grant specified in the June PR around mid-September."
That's not what you said on 8/7:
"I called the company and spoke to a man. I introduced myself. He did not"
"He said based upon RBL submitting in June and the 2-3 months to hear back, we should hear in September if any grants were won"
Then you had chat with the CEO (reported on Sunday 8/23) based on which you told us:
"Once we get the ec50 value from gmu, he brought this up not me, then we can submit ind for human trials."
Did the CEO update "September" to "mid-September" in that phone call?