MarketPeel
Insider Trading Intelligence
MR

Marcella K. Ruddy

TECX
CHIEF MEDICAL OFFICER · TECTONIC THERAPEUTIC, INC. · CIK 0002023849
FILING MIX · LIFETIME80%/20%
BUYS
16
SELLS
4
TOTAL VALUE
$410.9K
COMPANIES
3
ACTIVE SINCE
Jun 2024
HOLDINGS NOW
102,118
AVG SELL PX
$29.08
TRADE KIND
SHOWING 20 / 20
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
3 backtested trades · 8 horizons · 10 pending
Forward-return performance of every backtestable P/S trade by Marcella K. Ruddy, 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
7d3+100.00%-5.55%+1.54%-7.10%-5.64%
14d3+100.00%-8.72%+2.22%-10.95%-10.36%
30d3+66.67%-5.63%+3.99%-14.99%-14.99%
60d3+33.33%-0.32%+5.69%-6.79%-6.79%
90d3(1 pending)+50.00%-9.80%+13.09%-9.16%-9.16%
180d3(3 pending)
1y3(3 pending)
2y3(3 pending)
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
TECX · 67,682 shares · as of May 4, 2026
020,42540,85061,27581,70020252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 16 buys / 4 sellsCOVERAGE · 9 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SION
SIONNA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
17,34017,340Jun 17, 2026Jun 18, 2026View →
UPB
UPSTREAM BIO, INC.
PURCHASEGRANT
Stock grant
17,09617,096Jun 9, 2026Jun 11, 2026View →
TECX
TECTONIC THERAPEUTIC, INC.
SALE10b5-1
10b5-1 plan
1,065$30.00$31.9K67,682May 4, 2026May 6, 2026View →
TECX
TECTONIC THERAPEUTIC, INC.
SALE10b5-1
10b5-1 plan
1,000$31.05$31.1K68,747Apr 1, 2026Apr 3, 2026View →
TECX
TECTONIC THERAPEUTIC, INC.
SALE10b5-1
10b5-1 plan
10,000$30.00$300.0K69,747Mar 6, 2026Mar 9, 2026View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
24,25024,250Mar 4, 2026Mar 5, 2026View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
26,50079,747Mar 4, 2026Mar 5, 2026View →
TECX
TECTONIC THERAPEUTIC, INC.
SALE
Chief Medical Officer
2,064$23.22$47.9K53,247Feb 4, 2026Feb 10, 2026View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
5,37055,311Sep 25, 2025Sep 29, 2025View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
9,7509,750Sep 25, 2025Sep 29, 2025View →
SION
SIONNA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
19,95919,959Jun 12, 2025Jun 16, 2025View →
UPB
UPSTREAM BIO, INC.
PURCHASEGRANT
Stock grant
17,09617,096Jun 10, 2025Jun 12, 2025View →
SION
SIONNA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
39,91939,919Feb 6, 2025Feb 10, 2025View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
17,87649,941Feb 4, 2025Feb 6, 2025View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
32,50232,502Feb 4, 2025Feb 6, 2025View →
UPB
UPSTREAM BIO, INC.
PURCHASEGRANT
Stock grant
17,09617,096Oct 10, 2024Oct 15, 2024View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
18,70418,704Jun 20, 2024Jun 24, 2024View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
32,06532,065Jun 20, 2024Jun 24, 2024View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
81,70081,700Jun 20, 2024Jun 24, 2024View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
43,94643,946Jun 20, 2024Jun 24, 2024View →
Other insiders · TECX
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About this filer
CIK 0002023849
ROLE
Chief Medical Officer
PRIMARY
TECX
COMPANIES
3
ACTIVE SINCE
Jun 2024
MARKETPEEL · /INSIDER/0002023849DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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