DESOUZA ERROL B 4

What Happened

• Errol B. Desouza, a director of Alector, Inc. (ALEC), was granted two awards on June 17, 2026: 28,700 restricted stock units (RSUs) and 9,450 derivative shares. Both awards were reported as acquisitions at $0.00 per share (compensation awards), totaling 38,150 shares granted.
• This is a compensation/award transaction (not an open-market purchase or sale) and therefore reflects company equity compensation rather than a direct personal cash investment.

Key Details

• Transaction date: 2026-06-17; reported the same day (filing appears timely).
• Price: $0.00 per share (standard for RSU/award grants).
• Shares granted: 28,700 RSUs + 9,450 derivative awards = 38,150 shares.
• Shares owned after transaction: not specified in the provided filing details.
• Footnotes:
  • F1: The 28,700 reported shares are RSUs that vest on the earlier of (i) June 16, 2027 or (ii) the issuer’s next annual meeting of stockholders.
  • F2: The 9,450 derivative award vests in 12 equal monthly installments beginning July 17, 2026, but will vest in full on the earlier of the one‑year anniversary of grant or the issuer’s next annual meeting.
• Transaction code: A = Award/Grant.

Context

• RSU and similar awards are compensation and commonly granted to directors and executives; they do not necessarily indicate the insider is buying or selling shares in the open market.
• Vesting schedules mean the shares won’t be delivered immediately; actual ownership and the ability to sell depend on vesting and any company-imposed trading restrictions.