Buyer accepts the balance sheet at a fixed historical date. Seller-friendly if signing at Q1 (peak deferred rev). Locked-box at Mar 31 captures the full -$109M as permanent benefit to the buyer.
NWC trued-up at close. Most common. Buyer pays for actual NWC at close vs target peg. If target is TTM average (-$78M) and close lands at -$95M, buyer pays seller $17M.
Rare in SaaS. Deal priced on enterprise value with NWC entirely outside the bridge — equivalent to assuming target NWC = 0. For Klaviyo, equivalent to handing the seller +$109M.