Insider Selling on October 9, 2026: ANET, DUOL and DDOG Lead $121.7M of Sales

Company insiders filed 61 open-market sales worth $121.7M with the SEC on October 9, 2026, across 53 companies. 38 of them (62%) were made under Rule 10b5-1 plans set up months in advance, which makes a sale less telling. Below are the largest, with what each insider owns now, how the stock has moved since, and each company's insider trading over the past 90 days.

The 15 largest insider sales filed Oct 9

Unscheduled sales

The largest sales made outside Rule 10b5-1 plans by officers and directors rather than 10% owners. These are the sales worth reading.

• Batista de Lima Filho Pedro (Director) at AXIA3 sold 837,000 shares at $11.50 ($9.6M), cutting their holding 15%.
• Jain Vivek (Chief Operations/Tech Officer) at ADI sold 5,305 shares at $407.79 ($2.2M), cutting their holding 12%.
• Magnani Alexandre Mr (Director) at PAGS sold 100,000 shares at $10.60 ($1.1M), cutting their holding 16%.
• Rodriquez Antonio (CFO) at CRNC sold 76,614 shares at $8.00 ($613K), cutting their holding 13%.
• Salinas Jennifer (EVP Chief Admin Officer) at CRNC sold 66,153 shares at $8.00 ($529K), cutting their holding 9.5%.
• Schanz Nils (EVP Product & Technology) at CRNC sold 52,439 shares at $8.00 ($420K), cutting their holding 15%.
• Mentz Christian (EVP, Chief Revenue Officer) at CRNC sold 48,923 shares at $8.00 ($391K), cutting their holding 17%.
• Schayowitz Adam (EVP, Head of R&D) at ZYME sold 13,832 shares at $25.85 ($358K), cutting their holding 37%.

Biggest stake cuts

The sales that shrank an insider's holding the most, in percent.

• von Ahn Luis (President & CEO, Co-Founder, Director, 10% Owner) at DUOL sold 110,046 shares at $151.70 ($16.7M), their entire reported stake.
• Sahin Ugur (Chief Executive Officer, 10% Owner) at BNTX sold 63,209 shares at $94.07 ($5.9M), their entire reported stake.
• Flanigan Micheal Neil (Director) at AVBC sold 5,000 shares at $22.34 ($112K), their entire reported stake.
• Clark Kevin P (Director) at VGNT sold 97,278 shares at $44.69 ($4.3M), cutting their holding 78%.
• Ninan Shibu (Chief Accounting Officer) at OKTA sold 14,677 shares at $217.80 ($3.2M), cutting their holding 57%.
• Scarpulla Justin (SVP, Chief Accounting Officer) at MRVL sold 1,100 shares at $273.59 ($301K), cutting their holding 55%.

Arista Networks, Inc. (ANET)

Ullal Jayshree (CEO and Chairperson, Director) sold 96,992 shares starting Oct 7 at an average $217.14, about $21.1M. That cut their holding 0.6%, leaving 15,545,738 shares. The trade was made under a Rule 10b5-1 plan set up in advance. Read the Form 4.

ANET last closed at $184.22 on Oct 29, -15.2% from the average sale price. Since Aug 1, Arista Networks, Inc. insiders filed 0 open-market purchases ($0) and 20 sales ($756.8M). 495 13F filers hold ANET among their 50 largest positions, including Francois Rochon, Steve Cohen and Cliff Asness. Members of Congress disclosed 11 trades in ANET over the past year; most recently Alan Armstrong (R-OK) bought $1,001–$15,000 on Mar 27.

Who traded ANET since Aug 1:

• Ullal Jayshree (CEO and Chairperson, Director): 8 sales of 2,306,801 shares, about $475.2M
• Bechtolsheim Andreas (10% Owner): 4 sales of 1,311,848 shares, about $260.8M
• Duda Kenneth (President and CTO, Director): 2 sales of 86,666 shares, about $16.9M
• Templeton Mark B (Director): 2 sales of 10,000 shares, about $2.0M
• Giancarlo Charles H (Director): 1 sale of 8,000 shares, about $1.4M
• Breithaupt Chantelle Yvette (Senior Vice President, CFO): 2 sales of 1,836 shares, about $383K
• Battles Kelly Bodnar (Director): 1 sale of 422 shares, about $79K

See every ANET insider trade and which funds own ANET.

Duolingo, Inc. (DUOL)

von Ahn Luis (President & CEO, Co-Founder, Director, 10% Owner) sold 110,046 shares starting Oct 7 at an average $151.70, about $16.7M. They sold their entire reported stake. The trade was made under a Rule 10b5-1 plan set up in advance. Read the Form 4.

DUOL last closed at $136.39 on Oct 29, -10.1% from the average sale price. Since Aug 1, Duolingo, Inc. insiders filed 0 open-market purchases ($0) and 9 sales ($37.7M). 23 13F filers hold DUOL among their 50 largest positions, including Alex Sacerdote.

Who traded DUOL since Aug 1:

• von Ahn Luis (President & CEO, Co-Founder, Director, 10% Owner): 4 sales of 226,000 shares, about $34.1M
• Gordon William B (Director): 1 sale of 10,000 shares, about $1.5M
• Chen Stephen C. (General Counsel): 2 sales of 9,096 shares, about $1.3M
• Glance Natalie (Chief Engineering Officer): 1 sale of 4,290 shares, about $567K
• Meese Robert (Chief Business Officer): 1 sale of 1,354 shares, about $175K

See every DUOL insider trade.

Datadog, Inc. (DDOG)

Le-Quoc Alexis (Chief Technology Officer, Director) sold 53,912 shares starting Oct 7 at an average $273.60, about $14.8M. That cut their holding 9.9%, leaving 488,033 shares. The trade was made under a Rule 10b5-1 plan set up in advance. Read the Form 4.

DDOG last closed at $265.84 on Oct 29, -2.8% from the average sale price. Since Aug 1, Datadog, Inc. insiders filed 0 open-market purchases ($0) and 31 sales ($216.0M). 165 13F filers hold DDOG among their 50 largest positions, including Hamilton Helmer and Glen Kacher. Members of Congress disclosed 9 trades in DDOG over the past year; most recently Maria Elvira Salazar (R-FL) partly sold $1,001–$15,000 on Sep 24.

Who traded DDOG since Aug 1:

• Pomel Olivier (Chief Executive Officer, Director): 4 sales of 290,023 shares, about $71.7M
• Le-Quoc Alexis (Chief Technology Officer, Director): 6 sales of 269,956 shares, about $66.1M
• Obstler David M (Chief Financial Officer): 4 sales of 96,524 shares, about $21.9M
• Agarwal Amit (Director): 3 sales of 60,000 shares, about $15.0M
• Jacobson Matthew (Director): 1 sale of 59,424 shares, about $15.0M
• Blitzer Adam (Chief Operating Officer): 2 sales of 25,844 shares, about $5.5M
• Walters Sean Michael (Chief Revenue Officer): 2 sales of 25,285 shares, about $5.5M
• Li Yanbing (Chief Product Officer): 2 sales of 23,906 shares, about $5.2M

See every DDOG insider trade.

AXIA Energia S.A. (AXIA3)

Batista de Lima Filho Pedro (Director) sold 837,000 shares starting Oct 7 at an average $11.50, about $9.6M. That cut their holding 14.7%, leaving 4,859,531 shares. Read the Form 4.

Since Aug 1, AXIA Energia S.A. insiders filed 10 open-market purchases ($13.6M) and 14 sales ($55.8M).

Who traded AXIA3 since Aug 1:

• Batista de Lima Filho Pedro (Director): 6 purchases of 1,285,400 shares, about $13.6M; 13 sales of 4,989,400 shares, about $55.7M
• Gualda Sampaio Araujo Camila (See Remarks*): 1 sale of 10,800 shares, about $116K
• Corso Matte Ana Silvia (Director): 3 purchases of 5,500 shares, about $54K
• de Bittencourt Marinho Gisomar Francisco (See Remarks*): 1 purchase of 100 shares, about $1K

See every AXIA3 insider trade.

Super Micro Computer, Inc. (SMCI)

Liu Liang Chiu-Chu Sara (Director, 10% Owner) sold 100,000 shares starting Oct 7 at an average $45.02, about $4.5M. That cut their holding 22.9%, leaving 337,506 shares. The trade was made under a Rule 10b5-1 plan set up in advance. Read the Form 4.

Liang Charles (President and CEO, Director, 10% Owner) sold 100,000 shares starting Oct 7 at an average $45.02, about $4.5M. That cut their holding 22.9%, leaving 337,506 shares. The trade was made under a Rule 10b5-1 plan set up in advance. Read the Form 4.

SMCI last closed at $34.43 on Oct 29, -23.5% from the average sale price. Since Aug 1, Super Micro Computer, Inc. insiders filed 0 open-market purchases ($0) and 4 sales ($24.4M). 41 13F filers hold SMCI among their 50 largest positions. Members of Congress disclosed 4 trades in SMCI over the past year; most recently John Boozman (R-AR) bought $1,001–$15,000 on Dec 11.

Who traded SMCI since Aug 1:

• Liu Liang Chiu-Chu Sara (Director, 10% Owner): 2 sales of 300,000 shares, about $12.2M
• Liang Charles (President and CEO, Director, 10% Owner): 2 sales of 300,000 shares, about $12.2M

See every SMCI insider trade.

BioNTech SE (BNTX)

Sahin Ugur (Chief Executive Officer, 10% Owner) sold 63,209 shares starting Oct 8 at an average $94.07, about $5.9M. They sold their entire reported stake. The trade was made under a Rule 10b5-1 plan set up in advance. Read the Form 4.

BNTX last closed at $89.13 on Oct 29, -5.2% from the average sale price. Since Aug 1, BioNTech SE insiders filed 0 open-market purchases ($0) and 14 sales ($84.2M). 19 13F filers hold BNTX among their 50 largest positions.

See every BNTX insider trade and which funds own BNTX.

UNITED THERAPEUTICS Corp (UTHR)

Rothblatt Martine A (Chairperson & CEO, Director) sold 9,500 shares starting Oct 8 at an average $534.31, about $5.1M. That cut their holding 2.8%, leaving 324,443 shares. The trade was made under a Rule 10b5-1 plan set up in advance. Read the Form 4.

UTHR last closed at $593.54 on Oct 29, +11.1% from the average sale price. Since Aug 1, UNITED THERAPEUTICS Corp insiders filed 0 open-market purchases ($0) and 56 sales ($259.8M). 78 13F filers hold UTHR among their 50 largest positions, including Jim Simons. Members of Congress disclosed 3 trades in UTHR over the past year; most recently Lisa C. McClain (R-MI) bought $1,001–$15,000 on Oct 30.

Who traded UTHR since Aug 1:

• Rothblatt Martine A (Chairperson & CEO, Director): 50 sales of 465,500 shares, about $238.2M
• Mahon Paul A (EVP & GENERAL COUNSEL): 5 sales of 41,500 shares, about $21.5M
• Mesa Nilda (Director): 1 sale of 228 shares, about $115K

See every UTHR insider trade.

Astera Labs, Inc. (ALAB)

Dyckerhoff Stefan A (Director) sold 12,499 shares starting Oct 7 at an average $376.06, about $4.7M. That cut their holding 21.0%, leaving 47,019 shares. The trade was made under a Rule 10b5-1 plan set up in advance. Read the Form 4.

ALAB last closed at $290.43 on Oct 29, -22.8% from the average sale price. Since Aug 1, Astera Labs, Inc. insiders filed 0 open-market purchases ($0) and 7 sales ($127.3M). 150 13F filers hold ALAB among their 50 largest positions, including Hamilton Helmer, Glen Kacher and Alex Sacerdote.

Who traded ALAB since Aug 1:

• Alba Manuel (Director): 1 sale of 183,000 shares, about $51.3M
• Gajendra Sanjay (President and COO, Director): 1 sale of 90,630 shares, about $30.8M
• Mohan Jitendra (Chief Executive Officer, Director): 1 sale of 90,630 shares, about $30.8M
• Dyckerhoff Stefan A (Director): 3 sales of 37,497 shares, about $12.0M
• Mazzara Philip (General Counsel and Secretary): 1 sale of 6,801 shares, about $2.3M

See every ALAB insider trade and which funds own ALAB.

Every number here comes from the original Form 4 filings. See all of the day's trades in the Oct 9 insider recap, or screen every Form 4 in the insider screener.