Form 4 Tracker
Cloudflare, Inc.
NET

93 insider filings · Latest: Oct 5, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Jun 4, 2025Jun 4 8:46 PMMichelle Zatlyn
Proposed Sale
153,847$170.92$26.3M—

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Jun 2, 2025Jun 2 8:29 PMDOUGLAS KRAMER
Proposed Sale
3,000$166.00$498.0K—

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May 20, 2025May 20 9:08 PMMichelle Zatlyn
Proposed Sale
86,378$157.42$13.6M—

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May 20, 2025May 20 8:28 PMTHOMAS J SEIFERT
Proposed Sale
41,556$157.52$6.5M—

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May 13, 2025May 13 9:13 PMMatthew Prince
Proposed Sale
157,152$150.36$23.6M—

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Apr 25, 2025Apr 25 8:24 PMTHOMAS J SEIFERT
Proposed Sale
10,000$118.87$1.2M—

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Apr 1, 2025Apr 1 8:09 PMDOUGLAS KRAMER
Proposed Sale
9,000$112.83$1.0M—

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Mar 20, 2025Mar 20 8:20 PMTHOMAS J SEIFERT
Proposed Sale
10,000$117.58$1.2M—

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Mar 5, 2025Mar 5 9:22 PMTHOMAS J SEIFERT
Proposed Sale
15,000$140.93$2.1M—

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Mar 5, 2025Mar 5 9:06 PMDOUGLAS KRAMER
Proposed Sale
3,000$140.06$420.2K—

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Feb 25, 2025Feb 25 10:29 PMMatthew Prince
Proposed Sale
471,456$143.14$67.5M—

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Feb 25, 2025Feb 25 9:09 PMKATRIN SUSANNE SUDER
Proposed Sale
9,941$145.82$1.4M—

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Feb 19, 2025Feb 19 9:52 PMMichelle Zatlyn
Proposed Sale
240,219$160.59$38.6M—

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Feb 19, 2025Feb 19 9:30 PMTHOMAS J SEIFERT
Proposed Sale
28,635$168.81$4.8M—

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Feb 3, 2025Feb 3 9:18 PMTHOMAS J SEIFERT
Proposed Sale
15,000$138.40$2.1M—

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Feb 3, 2025Feb 3 9:07 PMDOUGLAS KRAMER
Proposed Sale
2,481$131.66$326.6K—

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Jan 21, 2025Jan 21 9:22 PMTHOMAS J SEIFERT
Proposed Sale
31,136$117.16$3.6M—

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Jan 17, 2025Jan 17 9:19 PMTHOMAS J SEIFERT
Proposed Sale
33,864$114.82$3.9M—

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Jan 3, 2025Jan 3 9:18 PMTHOMAS J SEIFERT
Proposed Sale
15,000$112.54$1.7M—

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Jan 2, 2025Jan 2 9:05 PMDOUGLAS KRAMER
Proposed Sale
9,000$112.45$1.0M—

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Apr 20, 2026Apr 22 11:55 PMMichelle ZatlynDirector, President and Board Co-Chair
Conversion
25,641—0(D)

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Apr 17, 2026Apr 17 9:33 PMThomas J SeifertChief Financial Officer
Conversion
10,000—8,925(D)

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Apr 17, 2026Apr 17 9:33 PMThomas J SeifertChief Financial Officer
Option Exercise
10,000$2.0450,000(D)

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Apr 17, 2026Apr 17 9:33 PMThomas J SeifertChief Financial Officer
Option Exercise
10,000—18,925(D)

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Apr 8, 2026Apr 8 11:06 PMMatthew PrinceDirector, CEO & Board Co-Chair, 10% Owner
Conversion
52,384—4,584,921(I)

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Apr 7, 2026Apr 8 11:06 PMMatthew PrinceDirector, CEO & Board Co-Chair, 10% Owner
Conversion
52,384—4,637,305(I)

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Apr 6, 2026Apr 8 11:06 PMMatthew PrinceDirector, CEO & Board Co-Chair, 10% Owner
Conversion
52,384—4,689,689(I)

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Mar 27, 2026Mar 30 10:37 PMJohn Graham-CummingDirector
Option Exercise
2,520$44.7210,080(D)

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Mar 18, 2026Mar 18 11:29 PMMatthew PrinceDirector, CEO & Board Co-Chair, 10% Owner
Conversion
52,384—4,742,073(I)

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Mar 17, 2026Mar 18 11:29 PMMatthew PrinceDirector, CEO & Board Co-Chair, 10% Owner
Conversion
52,384—4,794,457(I)

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Mar 16, 2026Mar 18 11:29 PMMatthew PrinceDirector, CEO & Board Co-Chair, 10% Owner
Conversion
29,473—4,846,841(I)

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Mar 17, 2026Mar 17 11:27 PMThomas J SeifertChief Financial Officer
Conversion
10,341—8,925(D)

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Mar 17, 2026Mar 17 11:27 PMThomas J SeifertChief Financial Officer
Option Exercise
10,341—19,266(D)

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Mar 17, 2026Mar 17 11:27 PMThomas J SeifertChief Financial Officer
Option Exercise
10,341$2.0460,000(D)

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Mar 5, 2026Mar 6 10:47 PMJanel RileyChief Accounting Officer
Option Exercise
23,332$67.7976,668(D)

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Mar 5, 2026Mar 6 12:18 AMMichelle ZatlynDirector, President and Board Co-Chair
Conversion
25,641—0(D)

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Mar 5, 2026Mar 6 12:18 AMMichelle ZatlynDirector, President and Board Co-Chair
Option Exercise
25,641$2.041,517,941(D)

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Mar 5, 2026Mar 6 12:18 AMMichelle ZatlynDirector, President and Board Co-Chair
Option Exercise
25,641—25,641(D)

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Mar 4, 2026Mar 6 12:18 AMMichelle ZatlynDirector, President and Board Co-Chair
Option Exercise
25,641$2.041,543,582(D)

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Mar 4, 2026Mar 6 12:18 AMMichelle ZatlynDirector, President and Board Co-Chair
Option Exercise
25,641—25,641(D)

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