Cloudflare Inc (NET) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 19, 2026.
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- Filings shown
- 31
- Open-market buys
- 0
- Open-market sells
- 320
Counts cover the 31 most recent Form 4 filings Tradune holds for NET (filed Jul 6 – Oct 19, 2026); the score below covers only the trailing 90 days (0 buys, 229 sells). No completed check of NET's Form 4 list on SEC EDGAR is on record yet; the latest NET filing Tradune holds was filed Oct 19, 2026. This is not guaranteed to be the complete record — see NET's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 25 filings Tradune holds for NET filed Aug 4 – Oct 19, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
229 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 65 sales· 235,518 sh
- checkbox disclosed
- On filings with the box not checked
- 0 sales· 0 sh
- not proof that no plan exists
- Not comparable
- 164 sales· 339,830 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Matthew PrinceDirector & Officer | 0 | 87 | — | 157,149 | −$45,959,037 |
| Michelle ZatlynPresident and Board Co-Chair | 0 | 64 | — | 297,027 | −$91,180,432 |
| Thomas J. SeifertChief Financial Officer | 0 | 28 | — | 87,500 | −$26,658,905 |
| John Graham-CummingDirector | 0 | 17 | — | 2,520 | −$765,997 |
| Carl LedbetterDirector | 0 | 12 | — | 20,000 | −$6,258,734 |
| Janel RileyChief Accounting Officer | 0 | 12 | — | 5,148 | −$1,579,995 |
| Alissa Michelle StarzakChief Legal Officer | 0 | 8 | — | 5,871 | −$1,807,014 |
| Mark J. HawkinsDirector | 0 | 1 | — | 133 | −$36,939 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Insider-activity score
0/ 100
0 distinct buyers0 buy · 229 sell tx
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at NET
No open-market insider purchases (Form 4 code P) were reported for NET between Jul 6, 2026 and Oct 19, 2026. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
Thomas J. Seifert Chief Financial Officer · filed Oct 19, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 12,500 | $44.72 | 117,458 | +12% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 1,100 | $297.29 | 116,358 | −0.9% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 3,401 | $298.32 | 112,957 | −2.9% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 3,756 | $299.36 | 109,201 | −3.3% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 2,643 | $300.39 | 106,558 | −2.4% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 598 | $301.99 | 105,960 | −0.6% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 502 | $303.26 | 105,458 | −0.5% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 500 | $304.15 | 104,958 | −0.5% | Oct 19, 2026 |
| Option exercise Performance Stock Option (right to buy) | 12,500 | — | — | — | Oct 19, 2026 |
| Tax withholding | 2,944 | $316.32 | 104,958 | −2.7% | Oct 15, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
Carl Ledbetter Director · filed Oct 19, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 1,963 | $304.47 | 869,179 (indirect) | −0.2% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 1,931 | $303.64 | 871,142 (indirect) | −0.2% | Oct 19, 2026 |
| Open-market sale 10b5-1 box checked | 1,106 | $305.60 | 868,073 (indirect) | −0.1% | Oct 19, 2026 |
Michelle Zatlyn President and Board Co-Chair · filed Oct 7, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 4,240 | $350.37 | 72,234 (indirect) | −5.5% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 2,162 | $351.40 | 70,072 (indirect) | −3.0% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 297 | $352.25 | 69,775 (indirect) | −0.4% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 3,900 | $349.38 | 76,474 (indirect) | −4.9% | Oct 7, 2026 |
| Option exercise Employee Stock Option (right to buy) | 33,003 | — | — | — | Oct 7, 2026 |
| Option exercise Class B Common Stock | 33,003 | — | — | — | Oct 7, 2026 |
| Conversion of derivative Class B Common Stock | 33,003 | — | — | — | Oct 7, 2026 |
| Conversion of derivative | 33,003 | — | 102,778 (indirect) | +47% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 5,694 | $346.40 | 97,084 (indirect) | −5.5% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 9,022 | $347.20 | 88,062 (indirect) | −9.3% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 7,688 | $348.23 | 80,374 (indirect) | −8.7% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 4,260 | $364.39 | 98,518 (indirect) | −4.1% | Oct 6, 2026 |
| Open-market sale 10b5-1 box checked | 6,179 | $365.69 | 92,339 (indirect) | −6.3% | Oct 6, 2026 |
| Open-market sale 10b5-1 box checked | 9,170 | $366.65 | 83,169 (indirect) | −9.9% | Oct 6, 2026 |
| Option exercise Class B Common Stock | 33,003 | — | — | — | Oct 6, 2026 |
| Conversion of derivative Class B Common Stock | 33,003 | — | — | — | Oct 6, 2026 |
| Open-market sale 10b5-1 box checked | 8,559 | $367.72 | 74,610 (indirect) | −10% | Oct 6, 2026 |
| Open-market sale 10b5-1 box checked | 4,083 | $368.59 | 70,527 (indirect) | −5.5% | Oct 6, 2026 |
| Open-market sale 10b5-1 box checked | 752 | $369.34 | 69,775 (indirect) | −1.1% | Oct 6, 2026 |
| Option exercise Employee Stock Option (right to buy) | 33,003 | — | — | — | Oct 6, 2026 |
| Conversion of derivative | 33,003 | — | 102,778 (indirect) | +47% | Oct 6, 2026 |
| Open-market sale 10b5-1 box checked | 2,823 | $354.32 | 76,068 (indirect) | −3.6% | Oct 5, 2026 |
| Conversion of derivative Class B Common Stock | 33,003 | — | — | — | Oct 5, 2026 |
| Option exercise Class B Common Stock | 33,003 | — | — | — | Oct 5, 2026 |
| Option exercise Employee Stock Option (right to buy) | 33,003 | — | — | — | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 157 | $356.05 | 69,775 (indirect) | −0.2% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 6,136 | $355.45 | 69,932 (indirect) | −8.1% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 5,892 | $353.35 | 78,891 (indirect) | −6.9% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 6,864 | $352.39 | 84,783 (indirect) | −7.5% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 4,829 | $351.30 | 91,647 (indirect) | −5.0% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 3,619 | $349.07 | 99,159 (indirect) | −3.5% | Oct 5, 2026 |
| Conversion of derivative | 33,003 | — | 102,778 (indirect) | +47% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 2,683 | $350.09 | 96,476 (indirect) | −2.7% | Oct 5, 2026 |
Carl Ledbetter Director · filed Sep 23, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 5,000 | $353.15 | 873,073 (indirect) | −0.6% | Sep 22, 2026 |
Thomas J. Seifert Chief Financial Officer · filed Sep 21, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,632 | $333.62 | 110,470 | −2.3% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 100 | $336.51 | 107,902 | −0.1% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 600 | $335.32 | 108,002 | −0.6% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 100 | $320.89 | 117,702 | −0.1% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 100 | $326.56 | 117,602 | −0.1% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 300 | $328.04 | 117,302 | −0.3% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 700 | $329.37 | 116,602 | −0.6% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 700 | $330.23 | 115,902 | −0.6% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 1,196 | $331.59 | 114,706 | −1.0% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 1,604 | $332.50 | 113,102 | −1.4% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 1,868 | $334.59 | 108,602 | −1.7% | Sep 17, 2026 |
| Conversion of derivative Class B Common Stock | 10,000 | — | — | — | Sep 17, 2026 |
| Option exercise Class B Common Stock | 10,000 | — | — | — | Sep 17, 2026 |
| Option exercise Employee Stock Option (right to buy) | 10,000 | — | — | — | Sep 17, 2026 |
| Conversion of derivative | 10,000 | — | 117,902 | +9.3% | Sep 17, 2026 |
| Open-market sale 10b5-1 box checked | 100 | $318.90 | 117,802 | −0.1% | Sep 17, 2026 |
Thomas J. Seifert Chief Financial Officer · filed Sep 15, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 2,944 | $327.23 | 107,902 | −2.7% | Sep 15, 2026 |
Carl Ledbetter Director · filed Sep 15, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 1,200 | $313.71 | 878,073 (indirect) | −0.1% | Sep 14, 2026 |
| Open-market sale 10b5-1 box checked | 960 | $309.51 | 882,113 (indirect) | −0.1% | Sep 14, 2026 |
| Open-market sale 10b5-1 box checked | 440 | $310.54 | 881,673 (indirect) | −0.0% | Sep 14, 2026 |
| Open-market sale 10b5-1 box checked | 2,400 | $312.86 | 879,273 (indirect) | −0.3% | Sep 14, 2026 |
Michelle Zatlyn PRESIDENT & BOARD CO-CHAIR · filed Sep 8, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Employee Stock Option (right to buy) | 33,003 | — | — | — | Sep 8, 2026 |
| Option exercise Class B Common Stock | 33,003 | — | — | — | Sep 8, 2026 |
| Conversion of derivative Class B Common Stock | 33,003 | — | — | — | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 5,489 | $279.41 | 69,775 (indirect) | −7.3% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 14,961 | $278.48 | 75,264 (indirect) | −17% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 1,387 | $276.58 | 95,048 (indirect) | −1.4% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 4,823 | $277.53 | 90,225 (indirect) | −5.1% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 2,202 | $274.39 | 96,435 (indirect) | −2.2% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 2,428 | $273.09 | 98,637 (indirect) | −2.4% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 1,713 | $272.41 | 101,065 (indirect) | −1.7% | Sep 8, 2026 |
| Conversion of derivative | 33,003 | — | 102,778 (indirect) | +47% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 4,804 | $282.87 | 69,775 (indirect) | −6.4% | Sep 4, 2026 |
| Open-market sale 10b5-1 box checked | 17,603 | $281.93 | 74,579 (indirect) | −19% | Sep 4, 2026 |
| Open-market sale 10b5-1 box checked | 7,843 | $281.02 | 92,182 (indirect) | −7.8% | Sep 4, 2026 |
| Open-market sale 10b5-1 box checked | 2,753 | $279.73 | 100,025 (indirect) | −2.7% | Sep 4, 2026 |
| Conversion of derivative | 33,003 | — | 102,778 (indirect) | +47% | Sep 4, 2026 |
| Conversion of derivative Class B Common Stock | 33,003 | — | — | — | Sep 4, 2026 |
| Option exercise Class B Common Stock | 33,003 | — | — | — | Sep 4, 2026 |
| Option exercise Employee Stock Option (right to buy) | 33,003 | — | — | — | Sep 4, 2026 |
| Open-market sale 10b5-1 box checked | 2,210 | $281.73 | 69,775 (indirect) | −3.1% | Sep 3, 2026 |
| Open-market sale 10b5-1 box checked | 7,203 | $276.79 | 95,575 (indirect) | −7.0% | Sep 3, 2026 |
| Option exercise Employee Stock Option (right to buy) | 33,003 | — | — | — | Sep 3, 2026 |
| Option exercise Class B Common Stock | 33,003 | — | — | — | Sep 3, 2026 |
| Conversion of derivative | 33,003 | — | 102,778 (indirect) | +47% | Sep 3, 2026 |
| Open-market sale 10b5-1 box checked | 7,273 | $277.79 | 88,302 (indirect) | −7.6% | Sep 3, 2026 |
| Conversion of derivative Class B Common Stock | 33,003 | — | — | — | Sep 3, 2026 |
| Open-market sale 10b5-1 box checked | 5,396 | $278.92 | 82,906 (indirect) | −6.1% | Sep 3, 2026 |
| Open-market sale 10b5-1 box checked | 4,744 | $279.77 | 78,162 (indirect) | −5.7% | Sep 3, 2026 |
| Open-market sale 10b5-1 box checked | 6,177 | $281.07 | 71,985 (indirect) | −7.9% | Sep 3, 2026 |
Michelle Zatlyn Director & Officer · filed Aug 21, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 956 | $280.42 | — | — | Aug 21, 2026 |
| Open-market sale | 90 | $281.31 | — | — | Aug 21, 2026 |
| Conversion of derivative | 33,003 | — | — | — | Aug 21, 2026 |
| Open-market sale | 2,206 | $274.47 | — | — | Aug 21, 2026 |
| Open-market sale | 8,990 | $275.66 | — | — | Aug 21, 2026 |
| Open-market sale | 4,236 | $276.67 | — | — | Aug 21, 2026 |
| Open-market sale | 5,642 | $277.95 | — | — | Aug 21, 2026 |
| Open-market sale | 5,624 | $278.78 | — | — | Aug 21, 2026 |
| Open-market sale | 5,259 | $279.72 | — | — | Aug 21, 2026 |
| Open-market sale | 136 | $289.30 | — | — | Aug 20, 2026 |
| Open-market sale | 2,544 | $288.01 | — | — | Aug 20, 2026 |
| Open-market sale | 2,335 | $287.00 | — | — | Aug 20, 2026 |
| Open-market sale | 3,109 | $286.10 | — | — | Aug 20, 2026 |
| Conversion of derivative | 33,003 | — | — | — | Aug 20, 2026 |
| Open-market sale | 7,007 | $283.21 | — | — | Aug 20, 2026 |
| Open-market sale | 8,646 | $284.05 | — | — | Aug 20, 2026 |
| Open-market sale | 759 | $291.80 | — | — | Aug 20, 2026 |
| Open-market sale | 8,467 | $285.16 | — | — | Aug 20, 2026 |
| Open-market sale | 1,420 | $293.42 | — | — | Aug 19, 2026 |
| Open-market sale | 3,971 | $291.78 | — | — | Aug 19, 2026 |
| Open-market sale | 4,298 | $290.86 | — | — | Aug 19, 2026 |
| Conversion of derivative | 33,003 | — | — | — | Aug 19, 2026 |
| Open-market sale | 1,217 | $298.98 | — | — | Aug 19, 2026 |
| Open-market sale | 824 | $297.99 | — | — | Aug 19, 2026 |
| Open-market sale | 1,554 | $297.10 | — | — | Aug 19, 2026 |
| Open-market sale | 7,566 | $296.31 | — | — | Aug 19, 2026 |
| Open-market sale | 10,604 | $295.31 | — | — | Aug 19, 2026 |
| Open-market sale | 1,546 | $292.87 | — | — | Aug 19, 2026 |
| Open-market sale | 3 | $300.84 | — | — | Aug 19, 2026 |
Alissa Michelle Starzak Chief Legal Officer · filed Aug 19, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 2,538 | $304.68 | — | — | Aug 18, 2026 |
| Open-market sale | 399 | $314.49 | — | — | Aug 17, 2026 |
| Open-market sale | 300 | $313.60 | — | — | Aug 17, 2026 |
| Open-market sale | 460 | $311.72 | — | — | Aug 17, 2026 |
| Open-market sale | 274 | $310.62 | — | — | Aug 17, 2026 |
| Open-market sale | 350 | $309.51 | — | — | Aug 17, 2026 |
| Open-market sale | 585 | $308.66 | — | — | Aug 17, 2026 |
| Open-market sale | 965 | $307.55 | — | — | Aug 17, 2026 |
| Option exercise | 3,333 | $77.70 | — | — | Aug 17, 2026 |
Janel Riley Chief Accounting Officer · filed Aug 19, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 500 | $308.92 | — | — | Aug 18, 2026 |
| Open-market sale | 600 | $306.58 | — | — | Aug 18, 2026 |
| Open-market sale | 1,216 | $304.77 | — | — | Aug 18, 2026 |
| Open-market sale | 898 | $303.81 | — | — | Aug 18, 2026 |
| Open-market sale | 267 | $302.62 | — | — | Aug 18, 2026 |
| Open-market sale | 270 | $314.42 | — | — | Aug 17, 2026 |
| Open-market sale | 160 | $313.41 | — | — | Aug 17, 2026 |
| Open-market sale | 190 | $311.64 | — | — | Aug 17, 2026 |
| Open-market sale | 180 | $310.82 | — | — | Aug 17, 2026 |
| Open-market sale | 140 | $309.64 | — | — | Aug 17, 2026 |
| Open-market sale | 332 | $308.46 | — | — | Aug 17, 2026 |
| Open-market sale | 395 | $307.38 | — | — | Aug 17, 2026 |
| Option exercise | 1,667 | $67.79 | — | — | Aug 17, 2026 |
Thomas J. Seifert Chief Financial Officer · filed Aug 19, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Conversion of derivative | 10,000 | — | — | — | Aug 17, 2026 |
| Open-market sale | 100 | $314.61 | — | — | Aug 17, 2026 |
| Open-market sale | 200 | $312.32 | — | — | Aug 17, 2026 |
| Open-market sale | 300 | $309.07 | — | — | Aug 17, 2026 |
| Open-market sale | 3,100 | $308.23 | — | — | Aug 17, 2026 |
| Open-market sale | 2,456 | $307.29 | — | — | Aug 17, 2026 |
| Open-market sale | 2,944 | $306.24 | — | — | Aug 17, 2026 |
| Open-market sale | 900 | $305.25 | — | — | Aug 17, 2026 |
Alissa Michelle Starzak Chief Legal Officer · filed Aug 18, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 3,775 | $315.78 | — | — | Aug 15, 2026 |
Janel Riley Chief Accounting Officer · filed Aug 18, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 4,135 | $315.78 | — | — | Aug 15, 2026 |
Michelle Zatlyn Director & Officer · filed Aug 18, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 23,157 | $315.78 | — | — | Aug 15, 2026 |
Matthew Prince Director & Officer · filed Aug 18, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 19,937 | $315.78 | — | — | Aug 15, 2026 |
Thomas J. Seifert Chief Financial Officer · filed Aug 18, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 2,944 | $315.78 | — | — | Aug 15, 2026 |
John Graham-Cumming Director · filed Aug 11, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 199 | $303.96 | — | — | Aug 10, 2026 |
| Open-market sale | 404 | $303.12 | — | — | Aug 10, 2026 |
| Open-market sale | 309 | $302.05 | — | — | Aug 10, 2026 |
| Open-market sale | 97 | $300.97 | — | — | Aug 10, 2026 |
| Open-market sale | 96 | $299.80 | — | — | Aug 10, 2026 |
| Open-market sale | 146 | $311.34 | — | — | Aug 10, 2026 |
| Open-market sale | 25 | $311.90 | — | — | Aug 10, 2026 |
| Open-market sale | 81 | $298.64 | — | — | Aug 10, 2026 |
| Open-market sale | 36 | $295.64 | — | — | Aug 10, 2026 |
| Open-market sale | 78 | $294.98 | — | — | Aug 10, 2026 |
| Open-market sale | 64 | $292.76 | — | — | Aug 10, 2026 |
| Option exercise | 2,520 | $44.72 | — | — | Aug 10, 2026 |
| Open-market sale | 186 | $309.02 | — | — | Aug 10, 2026 |
| Open-market sale | 85 | $307.59 | — | — | Aug 10, 2026 |
| Open-market sale | 108 | $306.16 | — | — | Aug 10, 2026 |
| Open-market sale | 68 | $297.70 | — | — | Aug 10, 2026 |
| Open-market sale | 365 | $305.14 | — | — | Aug 10, 2026 |
| Open-market sale | 173 | $309.83 | — | — | Aug 10, 2026 |
Carl Ledbetter Director · filed Aug 6, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 1,000 | $283.80 | — | — | Aug 6, 2026 |
| Open-market sale | 636 | $282.60 | — | — | Aug 6, 2026 |
| Open-market sale | 300 | $280.13 | — | — | Aug 6, 2026 |
| Open-market sale | 3,064 | $281.44 | — | — | Aug 6, 2026 |
Thomas J. Seifert Chief Financial Officer · filed Aug 6, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 1,139 | $301.00 | — | — | Aug 4, 2026 |
| Option exercise | 55,000 | $44.72 | — | — | Aug 4, 2026 |
| Open-market sale | 53,861 | $300.28 | — | — | Aug 4, 2026 |
Matthew Prince Director & Officer · filed Aug 5, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 645 | $302.20 | — | — | Aug 5, 2026 |
| Open-market sale | 720 | $292.74 | — | — | Aug 5, 2026 |
| Open-market sale | 2,352 | $291.57 | — | — | Aug 5, 2026 |
| Open-market sale | 1,009 | $293.64 | — | — | Aug 5, 2026 |
| Open-market sale | 7,578 | $295.05 | — | — | Aug 5, 2026 |
| Open-market sale | 9,998 | $295.76 | — | — | Aug 5, 2026 |
| Open-market sale | 4,798 | $296.83 | — | — | Aug 5, 2026 |
| Open-market sale | 2,865 | $297.81 | — | — | Aug 5, 2026 |
| Open-market sale | 1,474 | $298.87 | — | — | Aug 5, 2026 |
| Open-market sale | 1,174 | $299.94 | — | — | Aug 5, 2026 |
| Open-market sale | 432 | $301.14 | — | — | Aug 5, 2026 |
| Open-market sale | 586 | $302.86 | — | — | Aug 5, 2026 |
Matthew Prince Director & Officer · filed Aug 5, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Conversion of derivative | 33,631 | — | — | — | Aug 5, 2026 |
| Open-market sale | 307 | $302.86 | — | — | Aug 5, 2026 |
| Open-market sale | 338 | $302.20 | — | — | Aug 5, 2026 |
| Open-market sale | 232 | $301.15 | — | — | Aug 5, 2026 |
| Open-market sale | 623 | $299.94 | — | — | Aug 5, 2026 |
| Open-market sale | 782 | $298.87 | — | — | Aug 5, 2026 |
| Open-market sale | 1,540 | $297.81 | — | — | Aug 5, 2026 |
| Open-market sale | 2,841 | $296.83 | — | — | Aug 5, 2026 |
| Open-market sale | 5,602 | $295.75 | — | — | Aug 5, 2026 |
| Open-market sale | 4,334 | $295.05 | — | — | Aug 5, 2026 |
| Open-market sale | 575 | $293.65 | — | — | Aug 5, 2026 |
| Open-market sale | 422 | $292.74 | — | — | Aug 5, 2026 |
| Open-market sale | 1,156 | $291.64 | — | — | Aug 5, 2026 |
| Conversion of derivative | 18,752 | — | — | — | Aug 5, 2026 |
| Open-market sale | 1,820 | $299.80 | — | — | Aug 4, 2026 |
| Open-market sale | 846 | $298.65 | — | — | Aug 4, 2026 |
| Open-market sale | 6,984 | $297.49 | — | — | Aug 4, 2026 |
| Open-market sale | 3,538 | $296.73 | — | — | Aug 4, 2026 |
| Open-market sale | 2,765 | $295.77 | — | — | Aug 4, 2026 |
| Open-market sale | 404 | $294.31 | — | — | Aug 4, 2026 |
| Open-market sale | 272 | $293.05 | — | — | Aug 4, 2026 |
| Open-market sale | 182 | $292.31 | — | — | Aug 4, 2026 |
| Open-market sale | 643 | $290.99 | — | — | Aug 4, 2026 |
| Open-market sale | 1,400 | $289.87 | — | — | Aug 4, 2026 |
| Open-market sale | 869 | $289.18 | — | — | Aug 4, 2026 |
| Open-market sale | 304 | $287.99 | — | — | Aug 4, 2026 |
| Open-market sale | 382 | $303.60 | — | — | Aug 4, 2026 |
| Open-market sale | 6,038 | $302.97 | — | — | Aug 4, 2026 |
| Open-market sale | 5,191 | $302.09 | — | — | Aug 4, 2026 |
| Open-market sale | 644 | $300.52 | — | — | Aug 4, 2026 |
Matthew Prince Director & Officer · filed Aug 5, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 2,052 | $296.73 | — | — | Aug 4, 2026 |
| Open-market sale | 52 | $285.14 | — | — | Aug 4, 2026 |
| Open-market sale | 195 | $286.60 | — | — | Aug 4, 2026 |
| Open-market sale | 176 | $287.99 | — | — | Aug 4, 2026 |
| Open-market sale | 512 | $289.18 | — | — | Aug 4, 2026 |
| Open-market sale | 819 | $289.87 | — | — | Aug 4, 2026 |
| Open-market sale | 375 | $290.99 | — | — | Aug 4, 2026 |
| Open-market sale | 111 | $292.30 | — | — | Aug 4, 2026 |
| Open-market sale | 337 | $286.59 | — | — | Aug 4, 2026 |
| Open-market sale | 84 | $285.14 | — | — | Aug 4, 2026 |
| Open-market sale | 425 | $284.37 | — | — | Aug 4, 2026 |
| Open-market sale | 137 | $283.08 | — | — | Aug 4, 2026 |
| Open-market sale | 31 | $281.16 | — | — | Aug 4, 2026 |
| Open-market sale | 335 | $279.82 | — | — | Aug 4, 2026 |
| Conversion of derivative | 33,631 | — | — | — | Aug 4, 2026 |
| Open-market sale | 203 | $303.60 | — | — | Aug 4, 2026 |
| Open-market sale | 3,257 | $302.97 | — | — | Aug 4, 2026 |
| Open-market sale | 2,804 | $302.09 | — | — | Aug 4, 2026 |
| Open-market sale | 342 | $300.52 | — | — | Aug 4, 2026 |
| Open-market sale | 970 | $299.81 | — | — | Aug 4, 2026 |
| Open-market sale | 445 | $298.65 | — | — | Aug 4, 2026 |
| Open-market sale | 4,043 | $297.50 | — | — | Aug 4, 2026 |
| Open-market sale | 257 | $284.37 | — | — | Aug 4, 2026 |
| Open-market sale | 1,602 | $295.77 | — | — | Aug 4, 2026 |
| Open-market sale | 239 | $294.31 | — | — | Aug 4, 2026 |
| Open-market sale | 164 | $293.05 | — | — | Aug 4, 2026 |
| Conversion of derivative | 18,752 | — | — | — | Aug 4, 2026 |
| Open-market sale | 34 | $280.11 | — | — | Aug 4, 2026 |
| Open-market sale | 18 | $281.16 | — | — | Aug 4, 2026 |
| Open-market sale | 82 | $283.08 | — | — | Aug 4, 2026 |
Matthew Prince Director & Officer · filed Aug 5, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 586 | $278.20 | — | — | Aug 3, 2026 |
| Open-market sale | 6,257 | $283.99 | — | — | Aug 3, 2026 |
| Open-market sale | 565 | $279.03 | — | — | Aug 3, 2026 |
| Open-market sale | 1,136 | $280.32 | — | — | Aug 3, 2026 |
| Open-market sale | 2,434 | $281.58 | — | — | Aug 3, 2026 |
| Open-market sale | 4,363 | $282.32 | — | — | Aug 3, 2026 |
| Open-market sale | 6,728 | $283.45 | — | — | Aug 3, 2026 |
| Open-market sale | 13,360 | $284.42 | — | — | Aug 3, 2026 |
| Open-market sale | 3,672 | $285.30 | — | — | Aug 3, 2026 |
| Open-market sale | 299 | $286.23 | — | — | Aug 3, 2026 |
| Open-market sale | 4,778 | $284.81 | — | — | Aug 3, 2026 |
| Open-market sale | 772 | $285.76 | — | — | Aug 3, 2026 |
| Conversion of derivative | 33,631 | — | — | — | Aug 3, 2026 |
| Open-market sale | 488 | $277.02 | — | — | Aug 3, 2026 |
| Conversion of derivative | 18,752 | — | — | — | Aug 3, 2026 |
| Open-market sale | 267 | $277.40 | — | — | Aug 3, 2026 |
| Open-market sale | 505 | $278.65 | — | — | Aug 3, 2026 |
| Open-market sale | 461 | $280.03 | — | — | Aug 3, 2026 |
| Open-market sale | 632 | $280.95 | — | — | Aug 3, 2026 |
| Open-market sale | 2,545 | $281.95 | — | — | Aug 3, 2026 |
| Open-market sale | 2,535 | $282.95 | — | — | Aug 3, 2026 |
Mark J. Hawkins Director · filed Aug 4, 2026 ·
SEC ↗
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 133 | $277.74 | — | — | Aug 3, 2026 |
Listing the 25 most recent of 31 Form 4 filings held for NET; the 6 older filings (filed Jul 6 – Jul 17, 2026) are counted above but not listed here — see NET's full Form 4 filing history on SEC EDGAR.
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to NET's (Oct 19, 2026).
Frequently asked about NET insider activity
How many insiders bought NET stock in these Form 4 filings?
No open-market purchases (Form 4 code P) of NET shares were reported by Cloudflare Inc insiders between Jul 6, 2026 and Oct 19, 2026. The 31 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for NET?
The most recent Form 4 on this page was filed by Carl Ledbetter (Director) on Oct 19, 2026, reporting 3 transactions. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market NET insider sale shown?
The largest open-market sale among the filings shown was 53,861 NET shares at $300.28 (about $16,173,446) by Thomas J. Seifert (Chief Financial Officer) on Aug 4, 2026. Value is shares × the price reported on the Form 4; trades may be made under a prearranged Rule 10b5-1 plan.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track NET insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.