InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (21 ops.)
Insider track record
ExecutiveDisclosed buys
0
Disclosed sells
21
T+90 hit rate
29%
T+90 mean return
-6.9%
Across 14 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Browse the complete record of transactions filed by Sponsel David, Directeur Commercial. Officer active across 1 company, notably Alphatec Holdings, Inc.. Cumulatively, 39 reports have been published. Breakdown: 0 buy · 21 sells. Total volume traded: €7.3m. History available since 3 May 2021. The latest transaction was disclosed on 10 December 2025 (Cession). Regulator: SEC (Form 4). All data is accessible without signup.
Declarations39 total
21,106 shares@ US$20.79Common StockSEC:0001772837-25-000010:0
988 shares@ US$21.450.2% of flowCommon StockSEC:0001772837-25-000007:0
70,000 shares@ US$16.1811.2% of flowCommon StockSEC:0001772837-25-000005:0
137,445 shares@ US$15.0918.1% of flowCommon StockSEC:0001772837-25-000003:0
982 shares@ US$15.340.2% of flowCommon StockSEC:0001415889-25-021304:0
3,866 sharesCommon StockSEC:0001415889-25-010026:0
33,732 shares@ US$10.833.9% of flowCommon StockSEC:0001415889-25-007493:0
12,946 shares@ US$10.731.5% of flowCommon StockSEC:0001415889-25-005799:0
36,256 shares@ US$11.424.6% of flowCommon StockSEC:0001415889-25-003036:0
133,591 shares0Common StockSEC:0001415889-25-002595:0
58,283 shares@ US$10.717.0% of flowCommon StockSEC:0001415889-25-001441:1
238 shares@ US$10.000.0% of flowCommon StockSEC:0001415889-25-001441:0
62,018 shares@ US$9.696.6% of flowCommon StockSEC:0001415889-24-029319:0
32,365 shares@ US$15.195.2% of flowCommon StockSEC:0001415889-24-005992:0
35,063 shares0Common StockSEC:0001415889-24-004923:0
2,500 shares@ US$16.160.4% of flowCommon StockSEC:0001415889-24-003973:0
121,258 shares0Common StockSEC:0001415889-24-002693:0
2,500 shares@ US$15.000.4% of flowCommon StockSEC:0001415889-24-001297:0
2,500 shares@ US$15.000.4% of flowCommon StockSEC:0001415889-23-016946:0
55,577 shares@ US$16.179.4% of flowCommon StockSEC:0001415889-23-009981:0
68,174 shares@ US$15.5911.2% of flowCommon StockSEC:0001415889-23-008136:0
35,590 shares@ US$16.156.0% of flowCommon StockSEC:0001415889-23-006953:0
16,823 shares@ US$15.822.9% of flowCommon StockSEC:0001415889-23-004539:0
98,078 shares0Common StockSEC:0001415889-23-001976:0
10,000 shares@ US$11.991.3% of flowCommon StockSEC:0001415889-23-000716:0
25 of 39 declarations
About Sponsel David
David Sponsel is an executive at Alphatec Holdings, Inc.
