It's only $3500, unless you were on the active seniority list on the date LOA 12 was ratified- 2/17/2016. If you were, then you get the additional $1500, which is considered a profit share.
Xjt is great at f'ng over pilots in the fine print!

Edit: Almost forgot the 36% tax rate on bonuses. $3500 - 36%= $2240.00