SEC Form 4
Waste Connections, Inc. (WCN) insider trading
In the 12 months to Oct 24, 2026, 10 WCN insiders reported open-market sales of $6.5M across 14 filings; one president & CEO bought $7.6M.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $6.5M
- 14 filings · 10 insiders
- Open-market purchases
- $7.6M
- 1 filing · Ronald J. Mittelstaedt, President & CEO
Who traded WCN, and when
- Purchase
- Sale
WCN daily close from Oct 24, 2025 to Oct 23, 2026, between $149.02 and $186.60, last $186.60. 14 sale and 1 purchase filings by 11 insiders, marked at their filing dates. Ronald J. Mittelstaedt, President & CEO: bought $7.6M across 1 filing, first filed May 13, 2026, last May 13, 2026. Edward E. Guillet, Director: sold $1.6M across 1 filing, first filed Oct 30, 2025, last Oct 30, 2025. Patrick James Shea, Exec VP, General Counsel & Sec: sold $1.2M across 1 filing, first filed Jun 9, 2026, last Jun 9, 2026. Eric Hansen, Senior Vice President and CIO: sold $988.9K across 1 filing, first filed May 4, 2026, last May 4, 2026. Iii Robert Nielsen, SR VP Operations: sold $679.2K across 5 filings, first filed Dec 12, 2025, last Aug 21, 2026. Robert Michael Cloninger, SR VP, Deputy General Counsel: sold $480.7K across 1 filing, first filed Jul 30, 2026, last Jul 30, 2026. 5 others: sold $1.6M across 5 filings, first filed Mar 6, 2026, last Aug 20, 2026.
Largest mark · tap a row for others
Ronald J. Mittelstaedt · President & CEO
Purchase $7,611,750
50,000 shares at $152.24 avg
Filed May 13, 2026 · traded May 12
Close on filing date $152.16
Ronald J. Mittelstaedt · President & CEO
President & CEO
$7.6M boughtEdward E. Guillet · Director
Director
$1.6M soldPatrick James Shea · Exec VP, General Counsel & Sec
Exec VP, General Counsel & Sec
$1.2M soldEric Hansen · Senior Vice President and CIO
Senior Vice President and CIO
$988.9K soldIii Robert Nielsen · SR VP Operations
SR VP Operations
$679.2K soldRobert Michael Cloninger · SR VP, Deputy General Counsel
SR VP, Deputy General Counsel
$480.7K sold5 others
Combined, one mark per week
$1.6M soldHas Waste Connections, Inc.'s CEO sold stock?
No. Ronald J. Mittelstaedt (CEO) made no open-market sales filed as CEO in the last 12 months.
Open-market trades
15 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Ronald J. Mittelstaedt | President & CEO | — | $7.6M | 1 | — | |
| Edward E. Guillet | Director | $1.6M | — | 1 | — | |
| Patrick James Shea | Exec VP, General Counsel & Sec | $1.2M | — | 1 | — | |
| Eric Hansen | Senior Vice President and CIO | $988.9K | — | 1 | — | |
| Iii Robert Nielsen | SR VP Operations | $679.2K | — | 5 | — | |
| Robert Michael Cloninger | SR VP, Deputy General Counsel | $480.7K | — | 1 | — | |
| James Little | Executive VP Engineering | $427.2K | — | 1 | — | |
| Philip Rivard | SR VP Business Development | $416.4K | — | 1 | — | |
| Susan Netherton | SR VP People, Training & Dev | $290.5K | — | 1 | — | |
| Jason Craft | Executive Vice President & COO | $234.9K | — | 1 | — | |
| Derek Tan | SR VP Chief Accounting Officer | $200.6K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Iii Robert Nielsen SR VP Operations | Sale | 700 | $170.00 | $119.0K | 3,250 | |
traded | Philip Rivard SR VP Business Development | Sale | 2,500 | $166.57 | $416.4K | 734 | |
traded | Susan Netherton SR VP People, Training & Dev | Sale | 1,750 | $166.00 | $290.5K | 12,980 | |
traded | Iii Robert Nielsen SR VP Operations | Sale | 300 | $173.10 | $51.9K | 3,950 | |
traded | Robert Michael Cloninger SR VP, Deputy General Counsel | Sale | 2,811 | $171.02 | $480.7K | 11,666 | |
traded | Patrick James Shea Exec VP, General Counsel & Sec | Sale | 7,500 | $156.26 | $1.2M | 19,737 | |
traded | Jason Craft Executive Vice President & COO | Sale | 1,500 | $156.59 | $234.9K | 32,861 | |
traded | Iii Robert Nielsen SR VP Operations | Sale | 500 | $155.56 | $77.8K | 4,250 | |
traded | Iii Robert Nielsen SR VP Operations | Sale | 627 | $152.07 | $95.4K | 4,750 | |
traded | Ronald J. Mittelstaedt President & CEO | Purchase | 50,000 | $152.24 | $7.6M | 301,017 | |
traded | Eric Hansen Senior Vice President and CIO | Sale | 6,000 | $164.82 | $988.9K | 13,350 | |
traded | James Little Executive VP Engineering | Sale | 2,605 | $163.98 | $427.2K | 34,395 | |
traded | Derek Tan SR VP Chief Accounting Officer | Sale | 1,173 | $171.03 | $200.6K | 1,404 | |
traded | Iii Robert Nielsen SR VP Operations | Sale | 2,000 | $167.59 | $335.2K | 1,250 | |
traded | Edward E. Guillet Director | Sale | 9,000 | $174.44 | $1.6M | 14,883 |
GET /stocks/filings/vX/form-4?tickers=WCN&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"WCN"
],
"issuer_cik": "0001318220",
"owner_cik": "0001983938",
"accession_number": "0001983938-26-000007",
"form_type": "4",
"filing_date": "2026-08-21",
"period_of_report": "2026-08-19",
"issuer_name": "Waste Connections, Inc.",
"issuer_trading_symbol": "WCN",
"owner_name": "NIELSEN III ROBERT",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "SR VP Operations",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-19",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 700,
"transaction_price_per_share": 170,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 3250,
"transaction_value": 119000,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"WCN"
],
"issuer_cik": "0001318220",
"owner_cik": "0001982660",
"accession_number": "0001982660-26-000004",
"form_type": "4",
"filing_date": "2026-08-20",
"period_of_report": "2026-08-18",
"issuer_name": "Waste Connections, Inc.",
"issuer_trading_symbol": "WCN",
"owner_name": "RIVARD PHILIP",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "SR VP Business Development",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-18",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2500,
"transaction_price_per_share": 166.57,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 734,
"transaction_value": 416425,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 181 records
- Option exercises85 records
- Tax withholding85 records
- Gifts3 records
- Other8 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for WCN every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.