SEC Form 4
Kodiak Gas Services, Inc. (KGS) insider trading
In the 12 months to Oct 24, 2026, 7 KGS insiders reported open-market sales of $674.4M across 21 filings; 2 insiders bought $602.6K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $674.4M
- 21 filings · 7 insiders
- Open-market purchases
- $602.6K
- 2 filings
- Pre-arranged sales (10b5-1)
- 14 of 21
- $3.1M of $674.4M sold (0%)
Who traded KGS, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
KGS daily close from Oct 24, 2025 to Oct 23, 2026, between $32.95 and $76.27, last $44.31. 21 sale and 2 purchase filings by 9 insiders, marked at their filing dates. EQT Fund Management S.a r.l., 10% owner: sold $335.5M across 1 filing, first filed Dec 3, 2025, last Dec 3, 2025. Frontier Topco GP, LLC, 10% owner: sold $333.2M across 1 filing, first filed Nov 14, 2025, last Nov 14, 2025. Cory Anne Roclawski, EVP & CHRO: sold $2.1M across 3 filings, first filed Mar 16, 2026, last Jul 8, 2026. Pedro R. Buhigas, Chief Information Officer: sold $1.3M across 3 filings, first filed Mar 20, 2026, last Sep 17, 2026. Ewan William Hamilton, EVP & Chief Accounting Officer: sold $1.1M across 5 filings, first filed Mar 16, 2026, last Sep 15, 2026. Robert Michael McKee, President & CEO: sold $874.5K across 3 filings, first filed Aug 20, 2026, last Oct 6, 2026. Randall J. Hogan, Director: bought $328.9K across 1 filing, first filed Mar 16, 2026, last Mar 16, 2026. William Chad Lenamon, Executive Vice President & COO: sold $314.0K across 5 filings, first filed Jun 11, 2026, last Oct 13, 2026. Alexander Newsom Darden, Director: bought $273.8K across 1 filing, first filed Mar 16, 2026, last Mar 16, 2026.
Largest mark · tap a row for others
EQT Fund Management S.a r.l. · 10% owner
Sale $335,539,634
9,762,573 shares at $34.37 avg
Filed Dec 3, 2025 · traded Dec 1
Close on filing date $35.26
EQT Fund Management S.a r.l. · 10% owner
10% owner
$335.5M soldFrontier Topco GP, LLC · 10% owner
10% owner
$333.2M soldCory Anne Roclawski · EVP & CHRO
EVP & CHRO
$2.1M soldPedro R. Buhigas · Chief Information Officer
Chief Information Officer
$1.3M soldEwan William Hamilton · EVP & Chief Accounting Officer
EVP & Chief Accounting Officer
$1.1M soldRobert Michael McKee · President & CEO
President & CEO
$874.5K soldRandall J. Hogan · Director
Director
$328.9K boughtWilliam Chad Lenamon · Executive Vice President & COO
Executive Vice President & COO
$314.0K soldAlexander Newsom Darden · Director
Director
$273.8K boughtHas Kodiak Gas Services, Inc.'s CEO sold stock?
Yes. Robert Michael McKee (CEO) sold 14,673 shares ($874.5K) between Aug 2026 and Oct 2026, all under a pre-arranged 10b5-1 plan.
Open-market trades
23 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| EQT Fund Management S.a r.l. | 10% owner | $335.5M | — | 1 | — | |
| Frontier Topco GP, LLC | 10% owner | $333.2M | — | 1 | — | |
| Cory Anne Roclawski | EVP & CHRO | $2.1M | — | 3 | 14% of sales | |
| Pedro R. Buhigas | Chief Information Officer | $1.3M | — | 3 | 100% of sales | |
| Ewan William Hamilton | EVP & Chief Accounting Officer | $1.1M | — | 5 | 34% of sales | |
| Robert Michael McKee | President & CEO | $874.5K | — | 3 | 100% of sales | |
| Randall J. Hogan | Director | — | $328.9K | 1 | — | |
| William Chad Lenamon | Executive Vice President & COO | $314.0K | — | 5 | 100% of sales | |
| Alexander Newsom Darden | Director | — | $273.8K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | William Chad Lenamon Executive Vice President & COO | SalePre-arranged (10b5-1) | 1,000 | $53.25 | $53.3K | 84,294 | |
traded | Robert Michael McKee President & CEO | SalePre-arranged (10b5-1) | 2,666 | $53.95 | $143.8K | 289,924 | |
traded | Pedro R. Buhigas Chief Information Officer | SalePre-arranged (10b5-1) | 3,663 | $58.14 | $213.0K | 32,413 | |
traded | Ewan William Hamilton EVP & Chief Accounting Officer | SalePre-arranged (10b5-1) | 2,729 | $61.85 | $168.8K | 26,674 | |
traded | William Chad Lenamon Executive Vice President & COO | SalePre-arranged (10b5-1) | 1,000 | $63.21 | $63.2K | 85,294 | |
traded | Robert Michael McKee President & CEO | SalePre-arranged (10b5-1) | 5,999 | $59.31 | $355.8K | 292,590 | |
traded | Robert Michael McKee President & CEO | SalePre-arranged (10b5-1) | 6,008 | $62.39 | $374.8K | 298,589 | |
traded | William Chad Lenamon Executive Vice President & COO | SalePre-arranged (10b5-1) | 1,000 | $61.93 | $61.9K | 86,294 | |
traded | William Chad Lenamon Executive Vice President & COO | SalePre-arranged (10b5-1) | 1,000 | $67.79 | $67.8K | 87,294 | |
traded | Cory Anne Roclawski EVP & CHRO | SalePre-arranged (10b5-1) | 4,169 | $68.36 | $285.0K | 24,662 | |
traded | Pedro R. Buhigas Chief Information Officer | SalePre-arranged (10b5-1) | 4,625 | $67.78 | $313.5K | 38,454 | |
traded | Ewan William Hamilton EVP & Chief Accounting Officer | SalePre-arranged (10b5-1) | 2,729 | $68.62 | $187.3K | 31,617 | |
traded | William Chad Lenamon Executive Vice President & COO | SalePre-arranged (10b5-1) | 1,000 | $67.79 | $67.8K | 90,918 | |
traded | Pedro R. Buhigas Chief Information Officer | SalePre-arranged (10b5-1) | 13,942 | $55.73 | $777.0K | 42,723 | |
traded | Ewan William Hamilton EVP & Chief Accounting Officer | Sale | 5,797 | $56.18 | $325.7K | 34,346 | |
traded | Ewan William Hamilton EVP & Chief Accounting Officer | Sale | 2,091 | $55.25 | $115.5K | 40,143 | |
traded | Cory Anne Roclawski EVP & CHRO | Sale | 10,852 | $54.41 | $590.5K | 31,405 | |
traded | Randall J. Hogan Director | Purchase | 6,000 | $54.81 | $328.9K | 28,406 | |
traded | Alexander Newsom Darden Director | Purchase | 5,000 | $54.75 | $273.8K | 5,000 | |
traded | Ewan William Hamilton EVP & Chief Accounting Officer | Sale | 4,830 | $54.75 | $264.4K | 42,234 | |
traded | Cory Anne Roclawski EVP & CHRO | Sale | 21,161 | $56.52 | $1.2M | 42,257 | |
traded | EQT Fund Management S.a r.l. 10% owner | Sale | 9,762,573 | $34.37 | $335.5M | 0 | |
traded | Frontier Topco GP, LLC 10% owner | Sale | 10,000,000 | $33.32 | $333.2M | 9,762,573 |
GET /stocks/filings/vX/form-4?tickers=KGS&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"KGS"
],
"issuer_cik": "0001767042",
"owner_cik": "0001971854",
"accession_number": "0001193125-26-420485",
"form_type": "4",
"filing_date": "2026-10-13",
"period_of_report": "2026-10-12",
"issuer_name": "Kodiak Gas Services, Inc.",
"issuer_trading_symbol": "KGS",
"owner_name": "Lenamon William Chad",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Executive Vice President & COO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-12",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1000,
"transaction_price_per_share": 53.25,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 84294,
"transaction_value": 53250,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "This transaction is pursuant to a 10b5-1 trading plan adopted March 13, 2026."
}
]
},
{
"tickers": [
"KGS"
],
"issuer_cik": "0001767042",
"owner_cik": "0001971122",
"accession_number": "0001193125-26-415687",
"form_type": "4",
"filing_date": "2026-10-06",
"period_of_report": "2026-10-05",
"issuer_name": "Kodiak Gas Services, Inc.",
"issuer_trading_symbol": "KGS",
"owner_name": "McKee Robert Michael",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "President & CEO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-05",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2666,
"transaction_price_per_share": 53.9548,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 289924,
"transaction_value": 143843.4968,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "This transaction is pursuant to a 10b5-1 trading plan adopted May 19, 2026. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $53.3375 per share to $55.345 per share, inclusive. The reporting person undertakes to provide to Kodiak Gas Services, Inc., any security holder of Kodiak Gas Services, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."
}
]
}
]
}
// 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) · 42 records
- Tax withholding18 records
- Grants and awards23 records
- Employee stock purchase plan1 record
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 KGS 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.
- 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.
- Counted once
- When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.