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Insider · CIK 0001451612

Bruce Booth

director

Files at KYMR (Kymera Therapeutics, Inc.), VIGL (Vigil Neuroscience, Inc.), SION (Sionna Therapeutics, Inc.). First filing Feb 10, 2025, latest Feb 10, 2025.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
1 / 0
$1.1M bought, $0 sold

Where the trades landed

Last year at the company this insider has traded most, with each buy and sell on the bar it happened.

SION: Sionna Therapeutics, Inc.

SIONOct 9, 2026 · close 4.90

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

This insider’s open-market buys and sells, scored.

ScoreCompanyValueHoldingsPrice contextFiled
58Moderate
SIONbuy 4
Sionna Therapeutics, Inc.
$1.1M
60,000 shares
+8%-

Transactions

Every row this insider has filed, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Jun 25, 2025KYMR
Kymera Therapeutics, Inc.
AGrant or award
Stock Option (Right to Buy)derivative
+16,000$0.00$016,000Jun 26, 2025
Jun 12, 2025SION
Sionna Therapeutics, Inc.
AGrant or award
Non-Qualified Stock Option (right to buy)derivative
+19,959$0.00$019,959Jun 16, 2025
May 22, 2025VIGL
Vigil Neuroscience, Inc.
AGrant or award
Common Stock
+5,000$0.00$05,000May 23, 2025
Mar 3, 2025VIGL
Vigil Neuroscience, Inc.
AGrant or award
Stock Option Award (Right to Buy)derivative
+48,393$0.00$048,393Mar 4, 2025
Feb 10, 2025SION
Sionna Therapeutics, Inc.
CConversion
Common Stockindirect: By Atlas Venture Fund XI, L.P.
+2,886,293--2,886,293Feb 10, 2025
Feb 10, 2025SION
Sionna Therapeutics, Inc.
CConversion
Common Stockindirect: By Atlas Venture Opportunity Fund II, L.P.
+747,727--747,727Feb 10, 2025
Feb 10, 2025SION
Sionna Therapeutics, Inc.
POpen-market purchase
Common Stockindirect: By Atlas Venture Opportunity Fund II, L.P.
+60,000$18.00$1.1M807,727Feb 10, 2025
Feb 10, 2025SION
Sionna Therapeutics, Inc.
CConversion
Series Seed convertible preferred stockderivativeindirect: By Atlas Venture Fund XI, L.P.
-1,051,051$0.00$00Feb 10, 2025
Feb 10, 2025SION
Sionna Therapeutics, Inc.
CConversion
Series A convertible preferred stockderivativeindirect: By Atlas Venture Fund XI, L.P.
-1,806,317$0.00$00Feb 10, 2025
Feb 10, 2025SION
Sionna Therapeutics, Inc.
CConversion
Series B convertible preferred stockderivativeindirect: By Atlas Venture Fund XI, L.P.
-1,298,332$0.00$00Feb 10, 2025
Feb 10, 2025SION
Sionna Therapeutics, Inc.
CConversion
Series C convertible preferred stockderivativeindirect: By Atlas Venture Fund XI, L.P.
-61,463$0.00$00Feb 10, 2025
Feb 10, 2025SION
Sionna Therapeutics, Inc.
CConversion
Series C convertible preferred stockderivativeindirect: By Atlas Venture Opportunity Fund II, L.P.
-1,092,504$0.00$00Feb 10, 2025

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.

Bruce Booth: insider trades and track record | InsiderTell