As of August 29, 2026, Watsco's top three insider holders are Bob L Moss (Director, 36.50K shares), Denise Dickins (Director, 21.64K shares), John Michael Custer (Director, 3.55K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Bob L Moss | Director | 0 | 36,500 | 36,500 | 54.5% | 03 Jun, 2022 |
| 2 | Denise Dickins | Director | 21,638 | 0 | 21,638 | 32.3% | 09 Dec, 2025 |
| 3 | John Michael Custer | Director | 3,552 | 0 | 3,552 | 5.3% | 12 Jun, 2025 |
| 4 | Barry S Logan | Executive Vice President | 0 | 1,802 | 1,802 | 2.7% | 13 Mar, 2026 |
| 5 | Ana M Menendez | Cfo / Treasurer | 0 | 1,573 | 1,573 | 2.3% | 13 Mar, 2026 |
| 6 | Steven Rubin | Director | 608 | 0 | 608 | 0.9% | 09 Nov, 2021 |
| 7 | Aaron J Nahmad | President | 0 | 526 | 526 | 0.8% | 13 Mar, 2026 |
| 8 | Cesar L Alvarez | Director | 400 | 0 | 400 | 0.6% | 07 Mar, 2025 |
| 9 | Ana Lopez-Blazquez | Director | 293 | 0 | 293 | 0.4% | 16 Dec, 2025 |
| 10 | Albert H Nahmad | Chairman And Ceo | 0 | 92 | 92 | 0.1% | 13 Mar, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 11 Mar, 2026 | Albert H Nahmad | Chairman And Ceo | Acquired J | 25 | $336.95 | $8.42K | 92 | Indirect |
| 11 Mar, 2026 | Ana M Menendez | Cfo / Treasurer | Acquired J | 25 | $336.95 | $8.42K | 1,573 | Indirect |
| 11 Mar, 2026 | Barry S Logan | Executive Vice President | Acquired J | 19 | $336.95 | $6.40K | 1,802 | Indirect |
| 11 Mar, 2026 | Aaron J Nahmad | President | Acquired J | 25 | $336.95 | $8.42K | 526 | Indirect |
| 07 Jan, 2026 | Aaron J Nahmad | President | Acquired A | 13,955 | $338.85 | $4.73Mn | 305,993 | Direct |
| 12 Dec, 2025 | Ana Lopez-Blazquez | Director | Acquired M | 1,000 | $250.84 | $250.84K | 0 | Direct |
| 12 Dec, 2025 | Ana Lopez-Blazquez | Director | Disposed F | 707 | $354.61 | $250.71K | 293 | Direct |
| 12 Dec, 2025 | Ana Lopez-Blazquez | Director | Disposed M | 1,000 | $250.84 | $250.84K | 0 | Direct |
| 05 Dec, 2025 | Denise Dickins | Director | Disposed G | 269 | $0.00 | $0 | 21,638 | Direct |
| 24 Jul, 2025 | Gary L Tapella | Director | Acquired A | 1,000 | $484.69 | $484.69K | 1,000 | Direct |
| 10 Jun, 2025 | John Michael Custer | Director | Disposed S | 2,200 | $448.27 | $986.19K | 3,552 | Direct |
| 15 May, 2025 | Denise Dickins | Director | Disposed G | 191 | $0.00 | $0 | 21,907 | Direct |
| 12 May, 2025 | Denise Dickins | Director | Acquired M | 4,500 | $175.07 | $787.82K | 0 | Direct |
| 12 May, 2025 | Denise Dickins | Director | Disposed F | 1,624 | $484.84 | $787.38K | 2,876 | Direct |
| 12 May, 2025 | Denise Dickins | Director | Disposed M | 4,500 | $175.07 | $787.82K | 0 | Direct |
| 13 Mar, 2025 | Ana M Menendez | Cfo / Treasurer | Acquired J | 18 | $473.89 | $8.53K | 1,548 | Indirect |
| 13 Mar, 2025 | Barry S Logan | Executive Vice President | Acquired J | 13 | $473.89 | $6.16K | 1,783 | Indirect |
| 13 Mar, 2025 | Albert H Nahmad | Chairman And Ceo | Acquired J | 18 | $473.89 | $8.53K | 67 | Indirect |
| 13 Mar, 2025 | Aaron J Nahmad | President | Acquired J | 18 | $473.89 | $8.53K | 501 | Indirect |
| 05 Mar, 2025 | Cesar L Alvarez | Director | Acquired M | 679 | $175.07 | $118.87K | 0 | Direct |