TS
Insider
Timothy A Springer
DirectorTimothy A Springer (Director) filed 8 Form 4 reports in the past 24 months (8 purchases, 0 sales), most often in RNAC. Across 8 priced purchase filings, the average 21-session return was +5.6% from execution and -0.0% from disclosure (delay-adjusted; derived). The largest single filing was $40.0M of TECX (789,294 sh across 2 lots, as filed), executed Feb 5 2025. Data as of Nov 8 2026.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+5.6%
avg across 8 priced filings
Delay-adjustediThe same average, entered at disclosure dates
-0.0%
same 8 filings, from disclosure
Filings, ttm
8
8 buys · 0 sells
Median delay
2d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$54.4M
shares × price, as filed
Last traded
Apr 11 2025
Filed Apr 11 2025
Volume by month
Buys $54.4M
Sells $0
Shares × price, as filed · by filing month · past 24 months
Most traded names
RNAC
RNAC
5 buys · 0 sells
5 filings
TECX
TECX
3 buys · 0 sells
3 filings
Recent filings
RNACPURCHASE
Cartesian Therapeutics, Inc.
View filing →
$1.3M123,086 sh across 3 lots
Exec Apr 9 2025
Filed Apr 11 2025 · 5:30 PM ET TECXPURCHASE Tectonic Therapeutic, Inc. View filing → $2.2M
133,349 sh across 5 lots
Exec Apr 9 2025
Filed Apr 11 2025 · 5:30 PM ET TECXPURCHASE Tectonic Therapeutic, Inc. View filing → $8.6M
500,000 sh across 2 lots
Exec Apr 7 2025
Filed Apr 9 2025 · 5:30 PM ET RNACPURCHASE Cartesian Therapeutics, Inc. View filing → $1.4M
89,863 sh across 3 lots
Exec Mar 18 2025
Filed Mar 20 2025 · 5:30 PM ET TECXPURCHASE Tectonic Therapeutic, Inc. View filing → $40.0M
789,294 sh across 2 lots
Exec Feb 5 2025
Filed Feb 7 2025 · 5:30 PM ET RNACPURCHASE Cartesian Therapeutics, Inc. View filing → $294K
16,945 sh across 2 lots
Exec Jan 13 2025
Filed Jan 15 2025 · 5:30 PM ET RNACPURCHASE Cartesian Therapeutics, Inc. View filing → $803K
43,632 sh across 3 lots
Exec Dec 19 2024
Filed Dec 23 2024 · 5:30 PM ET RNACPURCHASE Cartesian Therapeutics, Inc. View filing → $7.4M
431,940 sh across 5 lots
Exec Nov 14 2024
Filed Nov 18 2024 · 5:30 PM ET