MarketPeel
Insider Trading Intelligence
Pricing
…
TS

Timothy A. Springer

TECX
DIRECTOR · TECTONIC THERAPEUTIC, INC. · CIK 0001055624
FILING MIX · LIFETIME87%/13%
BUYS
95
SELLS
14
TOTAL VALUE
$189.19M
COMPANIES
2
ACTIVE SINCE
Nov 2023
HOLDINGS NOW
18,000
AVG SELL PX
$0.93
TRADE KIND
SHOWING 109 / 109
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
67 backtested trades · 8 horizons · 54 pending
Forward-return performance of every backtestable P/S trade by Timothy A. Springer, 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
7d67+61.19%+2.85%+0.53%+2.33%+1.69%1.59
14d67+68.66%+5.09%+1.39%+3.71%+5.15%2.21
30d67+50.75%+0.49%+2.19%-1.69%-2.20%-0.77
60d67+62.69%+10.80%+5.52%+5.28%-1.45%1.42
90d67+58.21%+14.37%+6.83%+7.54%+9.31%1.69
180d67+1.49%-25.47%+10.76%-36.23%-34.92%-22.54
1y67+16.42%-22.83%+19.24%-42.06%-69.53%-7.25
2y67(54 pending)+0.00%-59.52%+34.44%-93.96%-90.79%—
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 · 10,200 shares · as of Jun 9, 2026
01,083,7122,167,4233,251,1354,334,84620252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 95 buys / 14 sellsCOVERAGE · 11 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
10,200——10,200Jun 9, 2026Jun 10, 2026 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
2,600——8,646,285Jan 2, 2026Jan 6, 2026 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
7,800——7,800Jan 2, 2026Jan 6, 2026 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
10,200——10,200Jun 9, 2025Jun 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
53,706$16.31$875.9K1,503,358Apr 11, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
36,338$10.77$391.5K656,513Apr 11, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
6,412$10.77$69.1K8,643,685Apr 11, 2025Apr 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
9,478$16.31$154.6K4,334,846Apr 11, 2025Apr 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
45,858$16.73$767.2K1,449,652Apr 10, 2025Apr 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
8,092$16.73$135.4K4,325,368Apr 10, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
3,451$10.92$37.7K620,175Apr 10, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
609$10.92$6.7K8,637,273Apr 10, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
45,144$10.43$471.1K616,724Apr 10, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
7,966$10.43$83.1K8,636,664Apr 10, 2025Apr 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
4,856$15.23$74.0K1,403,794Apr 9, 2025Apr 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
16,215$14.62$237.1K1,398,938Apr 9, 2025Apr 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
857$15.23$13.1K4,317,276Apr 9, 2025Apr 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
2,861$14.62$41.8K4,316,419Apr 9, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
7,342$9.43$69.2K8,628,667Apr 9, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
178$9.95$1.8K571,580Apr 9, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
41,604$9.43$392.2K571,402Apr 9, 2025Apr 11, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
31$9.95$3088,628,698Apr 9, 2025Apr 11, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
412,500$17.10$7.05M1,382,723Apr 7, 2025Apr 9, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
87,500$17.10$1.50M4,313,558Apr 7, 2025Apr 9, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
54,889$15.59$855.6K8,621,325Mar 20, 2025Mar 20, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
20,234$14.97$303.0K8,566,436Mar 19, 2025Mar 20, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
14,740$14.42$212.6K8,546,202Mar 18, 2025Mar 20, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
660,000$50.00$33.00M970,223Feb 5, 2025Feb 7, 2025 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
129,294$54.14$7.00M4,226,058Feb 5, 2025Feb 7, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
4,022$18.00$72.4K8,531,462Jan 14, 2025Jan 15, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
8,983$17.78$159.7K8,527,440Jan 13, 2025Jan 15, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
7,962$16.86$134.2K8,518,457Jan 13, 2025Jan 15, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
2,600——8,510,495Jan 2, 2025Jan 6, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
7,800——7,800Jan 2, 2025Jan 6, 2025 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
5,181$19.00$98.4K8,507,895Dec 23, 2024Dec 23, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
21,800$18.94$413.0K8,502,714Dec 20, 2024Dec 23, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
10,529$18.35$193.2K8,477,538Dec 19, 2024Dec 23, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
3,376$18.93$63.9K8,480,914Dec 19, 2024Dec 23, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
11,303$17.39$196.5K8,467,009Dec 19, 2024Dec 23, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
20,181$18.42$371.7K8,455,706Nov 18, 2024Nov 18, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
38,114$17.96$684.4K8,435,525Nov 18, 2024Nov 18, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
277,246$17.09$4.74M8,397,411Nov 15, 2024Nov 18, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
74,157$16.19$1.20M8,097,923Nov 14, 2024Nov 18, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
22,242$16.97$377.4K8,120,165Nov 14, 2024Nov 18, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
300,000$33.59$10.08M4,096,764Oct 22, 2024Oct 24, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
48,880$22.35$1.09M8,002,237Oct 4, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
16,650$23.57$392.4K8,018,887Oct 4, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
9,892$21.35$211.2K7,953,357Oct 4, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
4,879$23.93$116.8K8,023,766Oct 4, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
50,489$20.18$1.02M7,914,144Oct 3, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
8,043$21.86$175.8K7,943,465Oct 3, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
21,278$21.17$450.6K7,935,422Oct 3, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
10,249$19.01$194.9K7,863,655Oct 3, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
29,847$18.25$544.6K7,853,406Oct 3, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
113,587——113,587Oct 2, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
20,045——20,045Oct 2, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
1,801,314——7,818,045Oct 2, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
5,514$17.38$95.8K7,823,559Oct 2, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
317,879——330,695Oct 2, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
133,632——33,408Oct 2, 2024Oct 4, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
2,119,193——529,798Oct 2, 2024Oct 4, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
4,070$30.10$122.5K3,794,364Sep 26, 2024Sep 26, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
24,531$28.16$690.8K3,771,295Sep 26, 2024Sep 26, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
2,400$30.87$74.1K3,796,764Sep 26, 2024Sep 26, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
18,999$29.13$553.4K3,790,294Sep 26, 2024Sep 26, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
1,307——0Sep 25, 2024Sep 27, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
1,636,832——6,016,731Sep 25, 2024Sep 27, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
1,636,832——0Sep 25, 2024Sep 27, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
1,307——12,816Sep 25, 2024Sep 27, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
721,361——2,648,991Sep 25, 2024Sep 27, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
721,361——0Sep 25, 2024Sep 27, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
186,134——186,134Sep 24, 2024Sep 26, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASE
1,054,759——3,746,764Sep 24, 2024Sep 26, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
SALE
1,240,893——310,223Sep 24, 2024Sep 26, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
8,016$12.72$102.0K11,509Aug 12, 2024Aug 14, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
1,636,832$20.00$32.74M1,636,832Jul 2, 2024Jul 5, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
721,361$20.00$14.43M721,361Jul 2, 2024Jul 5, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
1,307$20.00$26.1K1,307Jul 2, 2024Jul 5, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
11,760——11,760Jun 20, 2024Jun 24, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
2,692,005——2,692,005Jun 20, 2024Jun 24, 2024 ↗View →
TECX
TECTONIC THERAPEUTIC, INC.
PURCHASEGRANT
Stock grant
1,551,116——1,551,116Jun 20, 2024Jun 24, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
826,169——1,927,630Apr 8, 2024Apr 10, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
4,130,846——4,379,899Apr 8, 2024Apr 10, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
24,785.081——0Apr 8, 2024Apr 10, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
123,925.407——0Apr 8, 2024Apr 10, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
1,970,443$1.46$2.88M33,043,849Mar 26, 2024Mar 26, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
1,970,443——0Mar 26, 2024Mar 26, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
19,044$0.60$11.4K31,073,406Mar 18, 2024Mar 20, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
800$0.61$488104,818Mar 18, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
537,500$0.59$314.5K31,054,362Mar 15, 2024Mar 18, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
1,200$0.56$672104,018Mar 15, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
648,372$0.54$351.7K30,516,862Mar 14, 2024Mar 18, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
2,000$0.53$1.1K102,818Mar 14, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
3,200$0.58$1.9K100,818Mar 13, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
1,200$0.61$73597,618Mar 12, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
1,200$0.65$78596,418Mar 11, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
4,800$0.66$3.2K95,218Mar 8, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
2,400$0.66$1.6K90,418Feb 7, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
800$0.65$52088,018Feb 6, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASE
800$0.69$55287,218Jan 17, 2024Mar 28, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
178,000——7,471,625Jan 2, 2024Jan 3, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
228,000——228,000Jan 2, 2024Jan 3, 2024 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
123,925.407$403.47$50.00M123,925.407Nov 15, 2023Nov 15, 2023 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
24,785.081$403.47$10.00M24,785.081Nov 15, 2023Nov 15, 2023 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
75,000$0.93$69.8K0Nov 13, 2023Nov 15, 2023 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
10,000——0Nov 13, 2023Nov 15, 2023 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
6,410——0Nov 13, 2023Nov 15, 2023 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
40,000——0Nov 13, 2023Nov 15, 2023 ↗View →
RNAC
CARTESIAN THERAPEUTICS, INC.
SALE
20,000——0Nov 13, 2023Nov 15, 2023 ↗View →
Other insiders · TECX
Loading peer insiders…
About this filer
CIK 0001055624
ROLE
Director
PRIMARY
TECX
COMPANIES
2
ACTIVE SINCE
Nov 2023
MARKETPEEL · /INSIDER/0001055624DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

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