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"So, I'm assuming, I'm good here for Lot#3 as I'm paying the due taxes on this lot with this employer name modification workaround."

ASSUME nothing.  Print out your entire income tax return and go over it page by page before filing.

"I noticed that Lot 1 and Lot 2 had some additional sale information. It mentioned that "Tax lot closed is a specified lot".  This was NOT mentioned against Lot#3"

I don't think it means anything important.  That seems to be saying that when you made a sale or sales that where lots 1 and 2 were sold you instructed the broker "sell these particular lots".  Maybe because they were "same day sales"?  And when you did the sale of lot 3 you said "sell 15 shares" without "specifying" and so the default FIFO process at the broker picked up lot 3?  Just guessing.

"had reached out to Payroll for clarification about reporting compensation from Lot 1 and Lot 2 on my paychecks and also on w-2 Box 1 but NOT reporting anything for Lot 3.  Here's the reply I got from them:-"

I don't really understand the response.  It almost sounds like they added the 10% discount to your ACTUAL cash paycheck?  Maybe that's why there's an amount in Box 12 with Code "V"?  There actions effectively changed a statutory option (ESPP) into a nonstatutory option (NQSO)?  Just another guess.  Ask them about the Box 12 Code V amount.