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Arm Holdings PLC

ARM
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
SEC CIK
0001973239

In the last 90 days, Arm Holdings PLC insiders filed 0 open-market purchases and 2 sales; 961 institutions reported holding it in 13F filings for Q2 2026, worth $35.0B in total; 3 superinvestors hold it, including Altimeter Capital and Duquesne Family Office.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Arm Holdings PLC insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
2 filings
1 insider, $5.78M in total
Insiders trading
1
Net value
−$5.78M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Arm Holdings PLC, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Arm Holdings PLC
NameTitleLast reported holdingLast filingFilings, past year
Child JasonChief Financial Officer153,442Sep 23, 20266
Abbey WilliamChief Commercial Officer20,563Sep 16, 20267
Haas Rene A.Chief Executive Officer338,666Sep 10, 20264
Bartels Laura KathleenChief Accounting Officer12,960Aug 18, 20263
Sine JeffreyDirector0Aug 11, 20262
Eaton Charlotte ClaireChief People Officer0May 22, 20263
Collins SpencerChief Legal Officer0May 21, 20263
Fisher Ronald DDirector–May 19, 20261
Jacobs Paul EDirector7,442May 19, 20261
Dykstra Karen EDirector–May 19, 20261
Sohn YoungDirector2,396May 19, 20261
Schooler RosemaryDirector9,572May 19, 20261
Grisenthwaite Richard RoyChief Architect0May 19, 20261

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Mar 27, 2026 (view filing)Mar 252 daysChild JasonChief Financial OfficerSSale−21.3K$148.37−$3.16M−10.9%174.7K after10b5-1
Mar 27, 2026 (view filing)Mar 25-262 daysHaas Rene A.Chief Executive OfficerSSale−31.9K$161.09−$5.13M−10.1%283.0K after8 lots10b5-1
Apr 16, 2026 (view filing)Apr 142 daysHaas Rene A.Chief Executive OfficerSSale−9.30K$160.85−$1.50M−3.3%273.7K after3 lots10b5-1
Apr 23, 2026 (view filing)Apr 221 dayChild JasonChief Financial OfficerSSale−21.3K$180.00−$3.83M−12.2%153.4K after10b5-1
May 13, 2026 (view filing)May 112 daysCollins SpencerChief Legal OfficerSSale−52.0K$211.73−$11.0M−100.0%0 after8 lots
May 19, 2026 (view filing)May 181 dayGrisenthwaite Richard RoyChief ArchitectSSale−24.3K$209.15−$5.09M−100.0%0 after
May 19, 2026 (view filing)Apr 23-May 1526 daysLateAbbey WilliamChief Commercial OfficerSSale−10.2K$211.91−$2.15M−15.8%54.2K after3 lots10b5-1
May 21, 2026 (view filing)May 201 dayChild JasonChief Financial OfficerSSale−31.9K$226.54−$7.23M−15.5%174.2K after10b5-1
May 21, 2026 (view filing)May 20-211 dayEaton Charlotte ClaireChief People OfficerSSale−7.10K$269.44−$1.91M−47.6%7.80K after2 lots
May 21, 2026 (view filing)May 19-202 daysAbbey WilliamChief Commercial OfficerSSale−16.0K$234.64−$3.74M−29.4%38.3K after2 lots
May 21, 2026 (view filing)May 192 daysCollins SpencerChief Legal OfficerSSale−40.9K$215.00−$8.80M−100.0%0 after
May 22, 2026 (view filing)May 211 dayEaton Charlotte ClaireChief People OfficerSSale−7.80K$290.01−$2.26M−100.0%0 after2 lots
May 22, 2026 (view filing)May 211 dayAbbey WilliamChief Commercial OfficerSSale−4.66K$287.03−$1.34M−12.2%33.6K after
May 26, 2026 (view filing)May 224 daysAbbey WilliamChief Commercial OfficerSSale−2.30K$305.82−$703.4K−6.8%31.3K after
Jun 1, 2026 (view filing)May 284 daysAbbey WilliamChief Commercial OfficerSSale−4.20K$343.81−$1.44M−13.4%27.1K after
Jun 3, 2026 (view filing)Jun 12 daysAbbey WilliamChief Commercial OfficerSSale−6.57K$402.72−$2.64M−24.2%20.6K after2 lots
Jun 4, 2026 (view filing)Jun 22 daysBartels Laura KathleenChief Accounting OfficerSSale−11.3K$392.70−$4.44M−48.2%12.1K after
Aug 31, 2026 (view filing)5:06 PM ETAug 274 daysChild JasonChief Financial OfficerSSale−10.4K$255.33−$2.66M−6.0%163.8K after10b5-1
Sep 23, 2026 (view filing)5:06 PM ETSep 212 daysChild JasonChief Financial OfficerSSale−10.4K$300.00−$3.12M−6.3%153.4K after10b5-1