Aaon, Inc.
A maker of heating, ventilation, and air-conditioning equipment for commercial buildings, AAON builds semi-custom rooftop units used in schools, offices, hospitals, and retail stores, plus cooling gear for data centers through its BASX brand. It was founded in 1988 when Norman Asbjornson bought the heating-and-air division of the John Zink Company in Tulsa, Oklahoma. The name "AAON" was picked to put the firm first in phone directories and is pronounced "aye-on."
Granted 117.1K · Sold 211.6K
Granted 79.9K · Sold 8.0K
Granted 103.6K
Granted 7.1K
Sold 4.0K
Granted 269.6K · Bought 6.7K · Sold 261.7K
Granted 7.1K
Granted 60.3K · Sold 51.9K
Granted 7.1K
Granted 450.4K · Sold 405.9K
Granted 124.9K · Sold 106.6K
Granted 99.3K · Sold 98.3K
Granted 7.1K
Granted 35.2K · Sold 19.4K
Granted 8.4K · Sold 5.5K
Granted 8.0K · Bought 2.5K
Granted 8.0K
Granted 4.4K
Granted 16.7K · Sold 12.0K
Granted 2.1K · Bought 428
Granted 15.5K
Granted 9.8K · Sold 8.7K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Asbjornson Norman HDirector, 10% owner · 51 transactions | -0.6% | 13.00M | 117.1K | — | 211.6K |
| Tobolski Matthew JosephChief Executive Officer, Director · 12 transactions | — | 738.1K | 79.9K | — | 8.0K |
| Benson David EFellow, AAON, Inc. · 3 transactions | — | 221.6Kas of Mar 2025 | 103.6K | — | — |
| McElroy A H IIDirector · 7 transactions | — | 136.4K | 7.1K | — | — |
| Lackey Paul K JrDirector · 4 transactions | -5.7% | 66.0Kas of Dec 2021 | — | — | 4.0K |
| Wakefield Stephen EPrincipal Engineering Advisor · 57 transactions | — | 55.9K | 269.6K | 6.7K | 261.7K |
| Kouplen AngelaDirector · 5 transactions | +92.4% | 39.2K | 7.1K | — | — |
| Wichman Gordon DouglasExecutive Vice President · 56 transactions | — | 33.2K | 60.3K | — | 51.9K |
| LeClair Stephen ODirector · 5 transactions | — | 31.6K | 7.1K | — | — |
| Fields Gary DDirector · 99 transactions | -19.4% | 30.8K | 450.4K | — | 405.9K |
| Thompson RebeccaChief Accounting Officer · 59 transactions | +241.2% | 27.7K | 124.9K | — | 106.6K |
| Gadiwalla Rony DFormer - VP, Info. Technology · 87 transactions | -19.6% | 25.6Kas of Dec 2022 | 99.3K | — | 98.3K |
| Lawhorn Caron ADirector · 5 transactions | +178.9% | 18.7K | 7.1K | — | — |
| Kidwell CaseyChief Administration Officer · 54 transactions | — | 15.7K | 35.2K | — | 19.4K |
| Teis RobertVP, Business Technology · 25 transactions | — | 15.1Kas of Mar 2025 | 8.4K | — | 5.5K |
| Stewart David RaymondDirector · 9 transactions | — | 12.9K | 8.0K | 2.5K | — |
| Ware BruceDirector · 6 transactions | — | 9.9K | 8.0K | — | — |
| Gazder Xerxes PFormer CIO · 16 transactions | — | 7.4Kas of Feb 2025 | 4.4K | — | — |
| Eason Christopher DouglasFormer Principal Acct Officer · 37 transactions | — | 6.2K | 16.7K | — | 12.0K |
| Shaub MatthewExecutive Vice President · 6 transactions | — | 2.3K | 2.1K | 428 | — |
| Cheung Chung KinChief Financial Officer · 1 transaction | — | 2.0K | 15.5K | — | — |
| Stewart Larry GeneFormer - Executive VP · 14 transactions | -48.4% | 1.2Kas of Nov 2022 | 9.8K | — | 8.7K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -1.18M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.