Mell Scott A 4

What Happened
Scott A. Mell, Chief Financial Officer and Treasurer of Allison Transmission Holdings, Inc. (ALSN), was awarded 8,947 restricted stock units (RSUs) on February 25, 2026. The Form 4 shows an acquisition (transaction code A) of 8,947 RSUs at $0.00 per unit — a compensation grant rather than a cash purchase. Each RSU represents a contingent right to receive one share of Allison common stock when vested.

Key Details

• Transaction date: 2026-02-25; Form 4 filed: 2026-02-27 (timely filing).
• Award: 8,947 RSUs; reported price $0.00 (grant).
• Vesting: RSUs vest in three equal annual installments beginning February 25, 2027 (per filing footnote).
• Shares owned after transaction: not specified in the provided filing details.
• Transaction code: A = Award/Grant (derivative award, not immediate stock ownership).

Context
RSUs are a form of equity compensation and generally do not convey stockholder rights until they vest; they can be forfeited if vesting conditions are not met. This award is routine compensation rather than an open-market purchase or sale and does not by itself indicate a buy or sell signal. Tax withholding or share withholding at vesting may apply per company policy.