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Tyson Eliot Marshall

ATEC
GENERAL COUNSEL & CORP. SEC. · ALPHATEC HOLDINGS, INC. · CIK 0001666669
FILING MIX · LIFETIME45%/55%
BUYS
14
SELLS
17
TOTAL VALUE
$5.15M
COMPANIES
1
ACTIVE SINCE
Jul 2023
HOLDINGS NOW
630,398
AVG SELL PX
$14.18
TRADE KIND
SHOWING 31 / 31
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
11 backtested trades · 8 horizons · 13 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Tyson Eliot Marshall, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d11+54.55%+0.34%+0.97%-0.62%+0.13%—
14d11+45.45%+0.79%+1.10%-0.31%+1.11%—
30d11+27.27%+5.52%+1.94%+3.58%+1.89%—
60d11+72.73%-10.10%+3.00%-13.10%-15.56%—
90d11+63.64%-14.83%+4.63%-16.89%-28.91%—
180d11(1 pending)+80.00%-21.31%+11.07%-21.43%-19.77%—
1y11(4 pending)+85.71%-19.57%+18.57%-38.14%-40.58%—
2y11(8 pending)+66.67%-10.09%+35.41%-45.51%-40.06%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
ATEC · 630,398 shares · as of Aug 5, 2026
0165,490330,980496,469661,959202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
FLOW · 14 buys / 17 sellsCOVERAGE · 13 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ATEC
ALPHATEC HOLDINGS, INC.
SALE
GENERAL COUNSEL & CORP. SEC.
8,168$9.65$78.8K630,398Aug 5, 2026Aug 7, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE
GENERAL COUNSEL & CORP. SEC.
23,393$11.03$258.0K638,566Apr 7, 2026Apr 9, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE
GENERAL COUNSEL & CORP. SEC.
12,500——0Apr 7, 2026Apr 9, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASE
GENERAL COUNSEL & CORP. SEC.
60,000$2.69$161.4K661,959Apr 7, 2026Apr 9, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASE
GENERAL COUNSEL & CORP. SEC.
12,500$3.34$41.8K601,959Apr 7, 2026Apr 9, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASE
GENERAL COUNSEL & CORP. SEC.
15,000$1.68$25.2K589,459Apr 7, 2026Apr 9, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASE
GENERAL COUNSEL & CORP. SEC.
15,000$1.98$29.7K574,459Apr 7, 2026Apr 9, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE
GENERAL COUNSEL & CORP. SEC.
60,000——0Apr 7, 2026Apr 9, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE
GENERAL COUNSEL & CORP. SEC.
15,000——0Apr 7, 2026Apr 9, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
88,835$12.49$1.11M559,459Mar 5, 2026Mar 8, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
12,840——648,294Feb 25, 2026Feb 27, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
42,459——42,459Feb 25, 2026Feb 27, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
205,094——550,536Feb 25, 2026Feb 27, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
84,918——635,454Feb 25, 2026Feb 27, 2026 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
12,965$21.47$278.4K345,442Dec 5, 2025Dec 9, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
9,924$21.48$213.2K358,407Dec 5, 2025Dec 9, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE
GENERAL COUNSEL & CORP. SEC.
70,000$19.51$1.37M368,331Nov 20, 2025Nov 21, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
8,168$14.96$122.2K438,331Aug 5, 2025Aug 5, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
9,924$14.86$147.5K446,499Aug 5, 2025Aug 5, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
12,878$12.00$154.5K456,423Aug 1, 2025Aug 5, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
1,500$12.00$18.0K469,301Jul 10, 2025Jul 14, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
19,848——470,801Apr 1, 2025Apr 2, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE
GENERAL COUNSEL & CORP. SEC.
27,805$11.44$318.1K450,953Mar 6, 2025Mar 7, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
114,322——465,793Jan 29, 2025Jan 31, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
12,965——478,758Jan 29, 2025Jan 31, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
105,833——351,471Jan 29, 2025Jan 31, 2025 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE
GENERAL COUNSEL & CORP. SEC.
50,232$10.88$546.5K245,638Jun 12, 2024Jun 14, 2024 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
9,225$13.16$121.4K295,870Mar 6, 2024Mar 8, 2024 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
11,825$13.30$157.3K305,095Mar 1, 2024Mar 4, 2024 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
27,778——316,920Feb 21, 2024Feb 22, 2024 ↗View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
45,000——289,142Jul 19, 2023Jul 21, 2023 ↗View →
Other insiders · ATEC
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About this filer
CIK 0001666669
ROLE
GENERAL COUNSEL & CORP. SEC.
PRIMARY
ATEC
COMPANIES
1
ACTIVE SINCE
Jul 2023
MARKETPEEL · /INSIDER/0001666669DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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