SEIFERT THOMAS J Insider Trading Activity

Average Profitability
<0.0001%
Insider Buys Quantity
0
Insider Buys Sum
$0
Insider Sells Quantity
124
Insider Sells Sum
$254.71M

Insider Activity of SEIFERT THOMAS J

According to the SEC Form 4 filings, SEIFERT THOMAS J, being in a position of

  1. Chief Financial Officer at Cloudflare, Inc.,
    оver the last 12 months, has bought 0 shares, and sold 358712 shares for $67.09M,
    over all time since 2002-11-11, has bought 0 shares, and sold 3640795 shares for $315.92M.

Biography of SEIFERT THOMAS J

No biography is available at this moment.

Statistics of Insider Transactions Last Year

Amount of Insider Buys and Sells by Stocks

Buys
 $000
Sells
 $67,085,75015100

Comparison of Insiders on Amount of Buys and Sells

2026-03-10SaleAkamai Technologies, Inc.
AKAM
Chief Financial Officer
13,745
0.0094%
$101.19$1.39M+3.27%
2026-03-10SaleAlignment Healthcare, Inc.
ALHC
Chief Executive Officer
180,000
0.0879%
$18.19$3.27M-0.48%
2026-03-10SaleAmeresco, Inc.
AMRC
EVP and General Counsel
50
<0.0001%
$26.34$1,317+0.08%
2026-03-10SaleCrexendo, Inc.
CXDO
Chief Strategy Officer
34,315
0.1116%
$6.94$238,032-1.54%
2026-03-10SaleCrexendo, Inc.
CXDO
19,994
0.0659%
$7.03$140,607-2.88%
2026-03-10SaleDucommun Incorporated
DCO
S.V.P., CFO
7,791
0.0522%
$131.90$1.03M-0.67%
2026-03-10PurchaseFederal Signal Corporation
FSS
director
2,000
0.0034%
$110.77$221,532-2.06%
2026-03-10SaleGlobalstar, Inc.
GSAT
VP & Chief Financial Officer
351
0.0003%
$55.38$19,439+6.12%
2026-03-10SaleGlobalstar, Inc.
GSAT
General Counsel
492
0.0004%
$55.38$27,248+6.12%
2026-03-10SaleGSI Technology, Inc.
GSIT
VP, Taiwan Operations
40,000
0.1367%
$8.66$346,544-0.73%
2026-03-10SaleHalozyme Therapeutics, Inc.
HALO
SVP, CHIEF OPERATING OFFICER
8,857
0.0074%
$67.64$599,087+0.25%
2026-03-10SaleHut 8 Corp.
HUT
Chief Financial Officer
4,625
0.0042%
$49.05$226,871+0.26%
2026-03-10SaleHut 8 Corp.
HUT
Chief Legal Officer
5,498
0.005%
$49.05$269,694+0.26%
2026-03-10SaleIRadimed Corporation
IRMD
CEO, PRESIDENT, CHAIRMAN
2,500
0.0196%
$100.11$250,275-1.16%
2026-03-10PurchaseLee Enterprises, Incorporated
LEE
27,800
0.4759%
$8.99$249,922-2.34%
2026-03-10SaleLattice Semiconductor Corporation
LSCC
SVP, R&D
2,366
0.0018%
$92.41$218,642-0.78%
2026-03-10SaleLattice Semiconductor Corporation
LSCC
SVP, Sales
1,577
0.0012%
$93.33$147,174-1.75%
2026-03-10SaleMarketAxess Holdings Inc.
MKTX
General Counsel and Secretary
100
0.0003%
$184.93$18,493-1.49%
2026-03-10PurchaseMesa Laboratories, Inc.
MLAB
director
1,301
0.0205%
$76.35$99,331-4.09%
2026-03-10PurchaseMesa Laboratories, Inc.
MLAB
director
1,315
0.0206%
$76.00$99,940-3.64%
Total: 846516
Company
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Information is provided 'as-is' and solely for informational purposes and is not advice. Prismo does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.