sellNotable cluster of 710b5-1 plan
Matthew Prince sold $31M of NET
CEO & Board Co-Chair at Cloudflare, Inc.. 143,534 shares at an average of $212.88, traded Mar 16, 2026, filed Mar 18, 2026.
Warning score
65Value
$31M
143,534 shares
Holdings after
13,618
-274% from before
From 52-week low
+114%
low $97.08, close $207.33
From 52-week high
-18%
high $253.30, as of Mar 16, 2026
Score components
- +25RoleCEO
- +25Trade size$30.6M at market
- +20Share of holdings soldSold 100% of holdings
- +15Cluster7 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -10.9%, 3m +0.6%, 6m +44.0%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
NETOct 9, 2026 · close 360.93
Since filing Mar 18, 2026: +60.1%SPY +18.5% · excess +41.5%
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001786925-26-000011, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Mar 16, 2026 | CConversion Class A Common Stockindirect: See footnote10b5-1 | +29,473 | - | - | 52,384 | Mar 18, 2026 |
| Mar 16, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -15,146 | $207.91 | $3.1M | 37,238 | Mar 18, 2026 |
| Mar 16, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -17,589 | $208.76 | $3.7M | 19,649 | Mar 18, 2026 |
| Mar 16, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -12,817 | $209.90 | $2.7M | 6,832 | Mar 18, 2026 |
| Mar 16, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -5,164 | $210.56 | $1.1M | 1,668 | Mar 18, 2026 |
| Mar 16, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -1,406 | $212.07 | $298k | 262 | Mar 18, 2026 |
| Mar 16, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -262 | $212.68 | $56k | 0 | Mar 18, 2026 |
| Mar 17, 2026 | CConversion Class A Common Stockindirect: See footnote10b5-1 | +52,384 | - | - | 52,384 | Mar 18, 2026 |
| Mar 17, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -1,454 | $208.14 | $303k | 50,930 | Mar 18, 2026 |
| Mar 17, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -372 | $208.83 | $78k | 50,558 | Mar 18, 2026 |
| Mar 17, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -756 | $210.70 | $159k | 49,802 | Mar 18, 2026 |
| Mar 17, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -16,268 | $211.73 | $3.4M | 33,534 | Mar 18, 2026 |
| Mar 17, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -28,031 | $212.62 | $6.0M | 5,503 | Mar 18, 2026 |
| Mar 17, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -5,372 | $213.39 | $1.1M | 131 | Mar 18, 2026 |
| Mar 17, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -131 | $214.49 | $28k | 0 | Mar 18, 2026 |
| Mar 18, 2026 | CConversion Class A Common Stockindirect: See footnote10b5-1 | +52,384 | - | - | 52,384 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -2,784 | $212.35 | $591k | 49,600 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -2,690 | $213.26 | $574k | 46,910 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -7,707 | $214.38 | $1.7M | 39,203 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -3,006 | $215.01 | $646k | 36,197 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -1,212 | $216.29 | $262k | 34,985 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -1,724 | $217.50 | $375k | 33,261 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -5,216 | $218.23 | $1.1M | 28,045 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -390 | $219.26 | $86k | 27,655 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -364 | $221.03 | $80k | 27,291 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -111 | $221.85 | $25k | 27,180 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -446 | $223.17 | $100k | 26,734 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -1,252 | $224.34 | $281k | 25,482 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -8,587 | $225.25 | $1.9M | 16,895 | Mar 18, 2026 |
| Mar 18, 2026 | SOpen-market sale Class A Common Stockindirect: See footnote10b5-1 | -3,277 | $226.03 | $741k | 13,618 | Mar 18, 2026 |
| Mar 16, 2026 | CConversion Class B Common Stockderivativeindirect: See footnote10b5-1 | -29,473 | $0.00 | $0 | 4,846,841 | Mar 18, 2026 |
| Mar 17, 2026 | CConversion Class B Common Stockderivativeindirect: See footnote10b5-1 | -52,384 | $0.00 | $0 | 4,794,457 | Mar 18, 2026 |
| Mar 18, 2026 | CConversion Class B Common Stockderivativeindirect: See footnote10b5-1 | -52,384 | $0.00 | $0 | 4,742,073 | Mar 18, 2026 |
Related signals
Other insiders at Cloudflare, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 38Weak | Cloudflare, Inc. | Michelle Zatlyn President and Board Co-Chair | $35M 99,009 shares | -96% | |
| 35Weak | Cloudflare, Inc. | Carl Ledbetter director | $1.8M 5,000 shares | -1% | |
| 27Weak | Cloudflare, Inc. | Thomas J Seifert Chief Financial Officer | $3.3M 10,000 shares | -8% | |
| 35Weak | Cloudflare, Inc. | Carl Ledbetter director | $1.6M 5,000 shares | -1% | |
| 45Moderate | Cloudflare, Inc. | Michelle Zatlyn PRESIDENT & BOARD CO-CHAIR | $28M 99,009 shares | -96% | |
| 45Moderate | Cloudflare, Inc. | Michelle Zatlyn President and Board Co-Chair | $28M 99,009 shares | -96% | |
| 27Weak | Cloudflare, Inc. | Thomas J Seifert Chief Financial Officer | $3.1M 10,000 shares | -8% | |
| 25Weak | Cloudflare, Inc. | Janel Riley Chief Accounting Officer | $1.6M 5,148 shares | -11% | |
| 20Weak | Cloudflare, Inc. | Alissa Michelle Starzak Chief Legal Officer | $1.8M 5,871 shares | -5% | |
| 17Weak | Cloudflare, Inc. | John Graham-Cumming director | $766k 2,520 shares | -1% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.