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ANET SEC Filing News — Arista Networks, Inc.

Latest SEC filings for Arista Networks, Inc. (ANET) explained in plain English: insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). Sourced directly from SEC EDGAR.

What you’re looking at: Each item below is parsed from an actual SEC filing. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.
Form 4 Insider Selling 2026-04-21

ANET insider Duda Kenneth (Director, President and CTO) sold 58,000 shares (~$9.47M)

Duda Kenneth, listed as Director, President and CTO at Arista Networks, Inc., reported an open-market sale of 58,000 ANET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Duda Kenneth (Director, President and CTO) Shares: 58,000 Est. Value: $9.47M
Form 144 Large Proposed Insider Sale 2026-04-21

ANET Form 144 filed for proposed insider sale by Ullal Jayshree (93,861 shares) ~$31.64M

Ullal Jayshree filed a Form 144 with the SEC indicating intent to sell ANET (Arista Networks, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Ullal Jayshree Shares: 93,861 Est. Value: $31.64M
Form 4 Insider Selling 2026-04-20

ANET insider Ullal Jayshree (Director, CEO and Chairperson) sold 350,000 shares (~$55.76M)

Ullal Jayshree, listed as Director, CEO and Chairperson at Arista Networks, Inc., reported an open-market sale of 350,000 ANET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Ullal Jayshree (Director, CEO and Chairperson) Shares: 350,000 Est. Value: $55.76M
Form 144 Large Proposed Insider Sale 2026-04-20

ANET Form 144 filed for proposed insider sale by Ullal Jayshree (306,139 shares) ~$102.44M

Ullal Jayshree filed a Form 144 with the SEC indicating intent to sell ANET (Arista Networks, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Ullal Jayshree Shares: 306,139 Est. Value: $102.44M
Form 4 Insider Selling 2026-04-17

ANET insider Wassenaar Yvonne (Director) sold 1,395 shares (~$213.5K)

Wassenaar Yvonne, listed as Director at Arista Networks, Inc., reported an open-market sale of 1,395 ANET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Wassenaar Yvonne (Director) Shares: 1,395 Est. Value: $213.5K
Form 4 Insider Selling 2026-04-16

ANET insider Breithaupt Chantelle Yvette (Senior Vice President, CFO) sold 8,890 shares (~$1.38M)

Breithaupt Chantelle Yvette, listed as Senior Vice President, CFO at Arista Networks, Inc., reported an open-market sale of 8,890 ANET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Breithaupt Chantelle Yvette (Senior Vice President, CFO) Shares: 8,890 Est. Value: $1.38M
Form 144 Large Proposed Insider Sale 2026-04-16

ANET Form 144 filed for proposed insider sale by Ullal Jayshree (350,000 shares) ~$111.52M

Ullal Jayshree filed a Form 144 with the SEC indicating intent to sell ANET (Arista Networks, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Ullal Jayshree Shares: 350,000 Est. Value: $111.52M
Form 4 Insider Selling 2026-04-15

ANET insider Ullal Jayshree (Director, CEO and Chairperson) sold 112,812 shares (~$16.93M)

Ullal Jayshree, listed as Director, CEO and Chairperson at Arista Networks, Inc., reported an open-market sale of 112,812 ANET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Ullal Jayshree (Director, CEO and Chairperson) Shares: 112,812 Est. Value: $16.93M
Form 144 Proposed Insider Sale 2026-04-14

ANET Form 144 filed for proposed insider sale by CHANTELLE BREITHAUPT (8,890 shares) ~$2.70M

CHANTELLE BREITHAUPT filed a Form 144 with the SEC indicating intent to sell ANET (Arista Networks, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: CHANTELLE BREITHAUPT Shares: 8,890 Est. Value: $2.70M
Form 144 Large Proposed Insider Sale 2026-04-13

ANET Form 144 filed for proposed insider sale by Ullal Jayshree (112,812 shares) ~$33.87M

Ullal Jayshree filed a Form 144 with the SEC indicating intent to sell ANET (Arista Networks, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Ullal Jayshree Shares: 112,812 Est. Value: $33.87M
Form 4 Insider Selling 2026-04-03

ANET insider Giancarlo Charles H (Director) sold 8,000 shares (~$1.01M)

Giancarlo Charles H, listed as Director at Arista Networks, Inc., reported an open-market sale of 8,000 ANET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Giancarlo Charles H (Director) Shares: 8,000 Est. Value: $1.01M
Form 4 Insider Selling 2026-03-19

ANET insider Duda Kenneth (Director, President and CTO) sold 58,000 shares (~$7.78M)

Duda Kenneth, listed as Director, President and CTO at Arista Networks, Inc., reported an open-market sale of 58,000 ANET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Duda Kenneth (Director, President and CTO) Shares: 58,000 Est. Value: $7.78M
Form 4 Insider Selling 2026-03-18

ANET insider Wassenaar Yvonne (Director) sold 1,395 shares (~$187.4K)

Wassenaar Yvonne, listed as Director at Arista Networks, Inc., reported an open-market sale of 1,395 ANET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Wassenaar Yvonne (Director) Shares: 1,395 Est. Value: $187.4K
Form 144 Large Proposed Insider Sale 2026-03-17

ANET Form 144 filed for proposed insider sale by Kenneth Duda (96,000 shares) ~$25.99M

Kenneth Duda filed a Form 144 with the SEC indicating intent to sell ANET (Arista Networks, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Kenneth Duda Shares: 96,000 Est. Value: $25.99M
Form 144 Large Proposed Insider Sale 2026-03-17

ANET Form 144 filed for proposed insider sale by Kenneth Duda (24,000 shares) ~$6.50M

Kenneth Duda filed a Form 144 with the SEC indicating intent to sell ANET (Arista Networks, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Kenneth Duda Shares: 24,000 Est. Value: $6.50M
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