SEC Form 4
Dorman Products, Inc. New (DORM) insider trading
In the 12 months to Oct 26, 2026, 4 DORM insiders reported open-market sales of $3.4M across 7 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $3.4M
- 7 filings · 4 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 3 of 7
- $297.3K of $3.4M sold (9%)
Who traded DORM, and when
- Sale
- Sale, pre-arranged (10b5-1)
DORM daily close from Oct 27, 2025 to Oct 26, 2026, between $100.50 and $153.75, last $124.74. 7 sale and 0 purchase filings by 4 insiders, marked at their filing dates. David Hession, SVP and CFO: sold $1.7M across 1 filing, first filed Nov 3, 2025, last Nov 3, 2025. John McKnight, President, Heavy Duty: sold $897.8K across 2 filings, first filed Dec 3, 2025, last Dec 15, 2025. Gregory C. Bowen, VP, Chief Accounting Officer: sold $512.0K across 1 filing, first filed Aug 7, 2026, last Aug 7, 2026. Donna M. Long, SVP, CIO: sold $297.3K across 3 filings, first filed Jan 6, 2026, last Aug 18, 2026.
Largest mark · tap a row for others
David Hession · SVP and CFO
Sale $1,690,379
12,493 shares at $135.31 avg
Filed Nov 3, 2025 · traded Oct 31
Close on filing date $133.58
David Hession · SVP and CFO
SVP and CFO
$1.7M soldJohn McKnight · President, Heavy Duty
President, Heavy Duty
$897.8K soldGregory C. Bowen · VP, Chief Accounting Officer
VP, Chief Accounting Officer
$512.0K soldDonna M. Long · SVP, CIO
SVP, CIO
$297.3K soldOpen-market trades
7 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| David Hession | SVP and CFO | $1.7M | — | 1 | — | |
| John McKnight | President, Heavy Duty | $897.8K | — | 2 | — | |
| Gregory C. Bowen | VP, Chief Accounting Officer | $512.0K | — | 1 | — | |
| Donna M. Long | SVP, CIO | $297.3K | — | 3 | 100% of sales |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Donna M. Long SVP, CIO | SalePre-arranged (10b5-1) | 734 | $135.21 | $99.2K | 19,339 | |
traded | Gregory C. Bowen VP, Chief Accounting Officer | Sale | 3,531 | $145.01 | $512.0K | 6,897 | |
traded | Donna M. Long SVP, CIO | SalePre-arranged (10b5-1) | 947 | $103.07 | $97.6K | 20,073 | |
traded | Donna M. Long SVP, CIO | SalePre-arranged (10b5-1) | 812 | $123.75 | $100.5K | 18,615 | |
traded | John McKnight President, Heavy Duty | Sale | 2,000 | $128.80 | $257.6K | 9,112 | |
traded | John McKnight President, Heavy Duty | Sale | 4,898 | $130.71 | $640.2K | 12,023 | |
traded | David Hession SVP and CFO | Sale | 12,493 | $135.31 | $1.7M | 15,012 |
GET /stocks/filings/vX/form-4?tickers=DORM&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"DORM"
],
"issuer_cik": "0000868780",
"owner_cik": "0001931700",
"accession_number": "0001628280-26-057643",
"form_type": "4",
"filing_date": "2026-08-18",
"period_of_report": "2026-08-17",
"issuer_name": "Dorman Products, Inc.",
"issuer_trading_symbol": "DORM",
"owner_name": "Long Donna M.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "SVP, CIO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-08-17",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 734,
"transaction_price_per_share": 135.21,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 19338.8738,
"transaction_value": 99244.14,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "Represents shares of the Issuer's common stock sold by the reporting person in accordance with a Rule 10b5-1 trading arrangement adopted by the reporting person on August 20, 2025."
}
],
"remarks": "The filing of this Statement shall not be construed as an admission (a) that the person filing this Statement is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of any equity securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person."
},
{
"tickers": [
"DORM"
],
"issuer_cik": "0000868780",
"owner_cik": "0002068014",
"accession_number": "0001628280-26-054845",
"form_type": "4",
"filing_date": "2026-08-07",
"period_of_report": "2026-08-05",
"issuer_name": "Dorman Products, Inc.",
"issuer_trading_symbol": "DORM",
"owner_name": "Bowen Gregory C.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "VP, Chief Accounting Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-05",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1557,
"transaction_price_per_share": 144.72,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 5340.4178,
"transaction_value": 225329.04,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"remarks": "The filing of this Statement shall not be construed as an admission (a) that the person filing this Statement is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of any securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person."
}
]
}
// 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) · 77 records
- Option exercises9 records
- Tax withholding43 records
- Grants and awards24 records
- Gifts1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
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.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Dorman Products, Inc. New's CEO sold stock?
No. Kevin M. Olsen (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is DORM’s insider data?
These are DORM Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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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 DORM 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.
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