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NET SEC Filing News — Cloudflare, Inc.

Latest SEC filings for Cloudflare, Inc. (NET) 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 2026-04-22

NET insider Zatlyn Michelle (Director, President and Board Co-Chair) sold 76,923 shares (~$15.76M)

Zatlyn Michelle, listed as Director, President and Board Co-Chair at Cloudflare, Inc., reported an open-market sale of 76,923 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Zatlyn Michelle (Director, President and Board Co-Chair) Shares: 76,923 Est. Value: $15.76M
Form 4 Insider Selling 2026-04-17

NET insider SEIFERT THOMAS J (Chief Financial Officer) sold 10,000 shares (~$1.98M)

SEIFERT THOMAS J, listed as Chief Financial Officer at Cloudflare, Inc., reported an open-market sale of 10,000 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: SEIFERT THOMAS J (Chief Financial Officer) Shares: 10,000 Est. Value: $1.98M
Form 144 Proposed Insider Sale 2026-04-17

NET Form 144 filed for proposed insider sale by THOMAS SEIFERT (10,000 shares) ~$3.95M

THOMAS SEIFERT filed a Form 144 with the SEC indicating intent to sell NET (Cloudflare, 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: THOMAS SEIFERT Shares: 10,000 Est. Value: $3.95M
Form 4 Insider Selling 2026-04-08

NET insider Prince Matthew (Director, CEO & Board Co-Chair, 10% Owner) sold 659 shares (~$147.4K)

Prince Matthew, listed as Director, CEO & Board Co-Chair, 10% Owner at Cloudflare, Inc., reported an open-market sale of 659 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Prince Matthew (Director, CEO & Board Co-Chair, 10% Owner) Shares: 659 Est. Value: $147.4K
Form 4 Insider Selling 2026-04-08

NET insider Prince Matthew (Director, CEO & Board Co-Chair, 10% Owner) sold 156,493 shares (~$33.17M)

Prince Matthew, listed as Director, CEO & Board Co-Chair, 10% Owner at Cloudflare, Inc., reported an open-market sale of 156,493 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Prince Matthew (Director, CEO & Board Co-Chair, 10% Owner) Shares: 156,493 Est. Value: $33.17M
Form 4 Insider Selling 2026-04-02

NET insider Hawkins Mark J (Director) sold 133 shares (~$27.9K)

Hawkins Mark J, listed as Director at Cloudflare, Inc., reported an open-market sale of 133 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Hawkins Mark J (Director) Shares: 133 Est. Value: $27.9K
Form 144 Proposed Insider Sale 2026-04-01

NET Form 144 filed for proposed insider sale by MARK HAWKINS (133 shares) ~$55.8K

MARK HAWKINS filed a Form 144 with the SEC indicating intent to sell NET (Cloudflare, 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: MARK HAWKINS Shares: 133 Est. Value: $55.8K
Form 4 Insider Selling 2026-03-30

NET insider Graham-Cumming John (Director) sold 3,644 shares (~$737.2K)

Graham-Cumming John, listed as Director at Cloudflare, Inc., reported an open-market sale of 3,644 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Graham-Cumming John (Director) Shares: 3,644 Est. Value: $737.2K
Form 144 Proposed Insider Sale 2026-03-27

NET Form 144 filed for proposed insider sale by John Graham-Cumming (8,684 shares) ~$3.53M

John Graham-Cumming filed a Form 144 with the SEC indicating intent to sell NET (Cloudflare, 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: John Graham-Cumming Shares: 8,684 Est. Value: $3.53M
Form 4 Insider Selling 2026-03-20

NET insider Ledbetter Carl (Director) sold 15,000 shares (~$3.41M)

Ledbetter Carl, listed as Director at Cloudflare, Inc., reported an open-market sale of 15,000 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Ledbetter Carl (Director) Shares: 15,000 Est. Value: $3.41M
Form 4 Insider Selling 2026-03-18

NET insider Prince Matthew (Director, CEO & Board Co-Chair, 10% Owner) sold 13,618 shares (~$3.10M)

Prince Matthew, listed as Director, CEO & Board Co-Chair, 10% Owner at Cloudflare, Inc., reported an open-market sale of 13,618 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Prince Matthew (Director, CEO & Board Co-Chair, 10% Owner) Shares: 13,618 Est. Value: $3.10M
Form 4 Insider Selling 2026-03-18

NET insider Prince Matthew (Director, CEO & Board Co-Chair, 10% Owner) sold 143,534 shares (~$30.56M)

Prince Matthew, listed as Director, CEO & Board Co-Chair, 10% Owner at Cloudflare, Inc., reported an open-market sale of 143,534 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Prince Matthew (Director, CEO & Board Co-Chair, 10% Owner) Shares: 143,534 Est. Value: $30.56M
Form 4 Insider Selling 2026-03-17

NET insider SEIFERT THOMAS J (Chief Financial Officer) sold 10,341 shares (~$2.20M)

SEIFERT THOMAS J, listed as Chief Financial Officer at Cloudflare, Inc., reported an open-market sale of 10,341 NET shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: SEIFERT THOMAS J (Chief Financial Officer) Shares: 10,341 Est. Value: $2.20M
Form 144 Proposed Insider Sale 2026-03-17

NET Form 144 filed for proposed insider sale by THOMAS SEIFERT (10,341 shares) ~$4.29M

THOMAS SEIFERT filed a Form 144 with the SEC indicating intent to sell NET (Cloudflare, 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: THOMAS SEIFERT Shares: 10,341 Est. Value: $4.29M
Form 144 Large Proposed Insider Sale 2026-03-16

NET Form 144 filed for proposed insider sale by Matthew Prince (471,456 shares) ~$195.49M

Matthew Prince filed a Form 144 with the SEC indicating intent to sell NET (Cloudflare, 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: Matthew Prince Shares: 471,456 Est. Value: $195.49M
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