Company / CIK 0000105016
WATSCO INC
- Ticker
- WSO
- Size, estimated from filings
- Large cap ($10B – $200B)
- Insiders on file
- 8
- Members of Congress who traded it
- 1
- Federal contracts on record
- none matched
- Lobbying filings on record
- none matched
- SEC filings
- EDGAR ↗
- Latest trade on record
- October 15, 2026
WATSCO INC (WSO) has 8 insiders on file who disclosed 12 transactions in the last 12 months (0 open-market buys, 1 sale, about $101.5M at reported prices), and 1 congressional trade in its stock is on record. No federal contract award that started in the last 180 days was found for a recipient with exactly this name; no lobbying filing names it as client this year.
WATSCO INC in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
1 person accounts for the disclosed buying and selling in WATSCO INC over the last 12 months; the most active is Lopez-Blazquez Ana with $251K.
Insiders
| Name | Role | Rows | Bought | Sold | Last filed |
|---|---|---|---|---|---|
| NAHMAD ALBERT H | Chairman and CEO | 2 | 0 | 0 | October 19, 2026 |
| Nahmad Aaron J | President | 3 | 0 | 0 | October 13, 2026 |
| LOGAN BARRY S | Executive Vice President | 2 | 0 | 0 | October 13, 2026 |
| MENENDEZ ANA M | CFO / Treasurer | 1 | 0 | 0 | March 13, 2026 |
| Lopez-Blazquez Ana | Director | 3 | 0 | 1 | December 16, 2025 |
| Dickins Denise | Director | 2 | 0 | 0 | December 9, 2025 |
| Tapella Gary L | Director | 1 | 0 | 0 | July 28, 2025 |
| Custer John Michael | Director | 1 | 0 | 1 | June 12, 2025 |
Rows are this company's Form 4 rows for each person. "Bought" and "sold" count open-market purchases (code P) and sales only. More in insider buying and insider selling.
Members of Congress who traded WSO
From periodic transaction reports that name the company's stock. Amounts are the sums of the ranges as filed. Every row is on the WSO page.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Val T. Hoyle | Representative (OR, District 4), Democrat | 1 | 0 | 1 | $1,001–$15K | September 23, 2025 |
Insider transactions
| Filer | Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NAHMAD ALBERT H | WSO | Option / conversion F | October 15, 2026 | October 19, 2026 | 4d | 314,576 | $288 | $90.4M | indirectderivative | Form 4 ↗ | |
| Nahmad Aaron J | WSO | Other A | October 9, 2026 | October 13, 2026 | 4d | 16,078 | $280 | $4.5M | Form 4 ↗ | ||
| LOGAN BARRY S | WSO | Other A | October 9, 2026 | October 13, 2026 | 4d | 3,573 | $280 | $1.0M | Form 4 ↗ | ||
| MENENDEZ ANA M | WSO | Other J | March 11, 2026 | March 13, 2026 | 2d | 25 | $337 | $8,424 | indirect | Form 4 ↗ | |
| LOGAN BARRY S | WSO | Other J | March 11, 2026 | March 13, 2026 | 2d | 19 | $337 | $6,402 | indirect | Form 4 ↗ | |
| Nahmad Aaron J | WSO | Other J | March 11, 2026 | March 13, 2026 | 2d | 25 | $337 | $8,424 | indirect | Form 4 ↗ | |
| NAHMAD ALBERT H | WSO | Other J | March 11, 2026 | March 13, 2026 | 2d | 25 | $337 | $8,424 | indirect | Form 4 ↗ | |
| Nahmad Aaron J | WSO | Other A | January 7, 2026 | January 9, 2026 | 2d | 13,955 | $339 | $4.7M | derivative | Form 4 ↗ | |
| Lopez-Blazquez Ana | WSO | Option / conversion M | December 12, 2025 | December 16, 2025 | 4d | 1,000 | $251 | $251K | derivative | Form 4 ↗ | |
| Lopez-Blazquez Ana | WSO | Sell F | December 12, 2025 | December 16, 2025 | 4d | 707 | $355 | $251K | Form 4 ↗ | ||
| Lopez-Blazquez Ana | WSO | Option / conversion M | December 12, 2025 | December 16, 2025 | 4d | 1,000 | $251 | $251K | Form 4 ↗ | ||
| Dickins Denise | WSO | Other G | December 5, 2025 | December 9, 2025 | 4d | 269 | — | — | Form 4 ↗ | ||
| Tapella Gary L | WSO | Other A | July 24, 2025 | July 28, 2025 | 4d | 1,000 | $485 | $485K | derivative | Form 4 ↗ | |
| Custer John Michael | WSO | Sell S | June 10, 2025 | June 12, 2025 | 2d | 2,200 | $448 | $986K | Form 4 ↗ | ||
| Dickins Denise | WSO | Other G | May 15, 2025 | May 16, 2025 | 1d | 191 | — | — | Form 4 ↗ |
Federal contracts (USAspending, awards started in the last 180 days)
No contract award starting in the last 180 days was found for a recipient named exactly "WATSCO INC". Subsidiaries and differently-spelled recipients are not matched — search contracts.
Lobbying (Senate LDA, as client)
No LDA filing posted since October 2025 names "WATSCO INC" as the client. Filings under a subsidiary or trade-association name are not matched — search lobbying.
Related companies
Companies whose stock was traded by the same people who traded WSO, by number of filers in common. It shows overlap in public filings and nothing else.
- Uber Technologies, Inc UBER 1 filer in common
- Arista Networks, Inc. ANET 1 filer in common
- AppLovin Corp APP 1 filer in common
- Meta Platforms, Inc. META 1 filer in common
- TransDigm Group INC TDG 1 filer in common
- MICRON TECHNOLOGY INC MU 1 filer in common
- NETFLIX INC NFLX 1 filer in common
- COGNIZANT TECHNOLOGY SOLUTIONS CORP CTSH 1 filer in common
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 1 | 1 | October 10, 2025 | October 10, 2025 | House Clerk search |
| SEC EDGAR, Form 4 | 13 | 15 | May 16, 2025 | October 19, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insiders and their transactions come from SEC EDGAR Form 4 filings for this issuer. Contracts and lobbying are matched by exact normalized name (suffixes like Inc./Corp. ignored) to USAspending recipients and LDA clients — a conservative match that misses subsidiaries on purpose. See methodology and corrections.
Not investment advice. Public records shown as filed; no recommendation is made or implied.