Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Cartesian Therapeutics, Inc.

RNAC · Nasdaq · CIK 0001453687 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

0 Form 4 transaction lines observed in the same window
0 sales · 0 option, withholding, award, gift or other lines

Last qualifying purchase2025-12-04 · BARABE TIMOTHY C · $205.8K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesNone
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

No Form 4 transaction event is present in the current 180-day window.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-12-04 · BARABE TIMOTHY C.

Recent Form 4 activity

1Purchases
3Sales
19Other Form 4 lines
23SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER0 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
1,855,626
Previous report
1,803,282
Avg daily volume
146,843
Days to cover
12.6

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2025-12-04BARABE TIMOTHY CPurchase (P)Common Stock30,000USD 6.86USD 205,800SEC filing ↗
2025-04-11SPRINGER TIMOTHY APurchase (P)Common Stock42,750USD 10.77USD 460,418SEC filing ↗
2025-04-10SPRINGER TIMOTHY APurchase (P)Common Stock57,170USD 10.46USD 598,273SEC filing ↗
2025-04-09SPRINGER TIMOTHY APurchase (P)Common Stock49,155USD 9.43USD 463,640SEC filing ↗
2025-03-20SPRINGER TIMOTHY APurchase (P)Common Stock54,889USD 15.59USD 855,720SEC filing ↗
2025-03-19SPRINGER TIMOTHY APurchase (P)Common Stock20,234USD 14.97USD 302,903SEC filing ↗
2025-03-18SPRINGER TIMOTHY APurchase (P)Common Stock14,740USD 14.42USD 212,551SEC filing ↗
2025-01-14SPRINGER TIMOTHY APurchase (P)Common Stock4,022USD 18.00USD 72,396SEC filing ↗
2025-01-13SPRINGER TIMOTHY APurchase (P)Common Stock16,945USD 17.35USD 293,957SEC filing ↗
2024-12-23SPRINGER TIMOTHY APurchase (P)Common Stock5,181USD 19.00USD 98,439SEC filing ↗
2024-12-20SPRINGER TIMOTHY APurchase (P)Common Stock21,800USD 18.94USD 412,892SEC filing ↗
2024-12-19SPRINGER TIMOTHY APurchase (P)Common Stock25,208USD 18.00USD 453,674SEC filing ↗
2024-11-18SPRINGER TIMOTHY APurchase (P)Common Stock58,295USD 18.12USD 1,056,261SEC filing ↗
2024-11-15SPRINGER TIMOTHY APurchase (P)Common Stock277,246USD 17.09USD 4,738,134SEC filing ↗
2024-11-14SPRINGER TIMOTHY APurchase (P)Common Stock96,399USD 16.37USD 1,578,049SEC filing ↗

Form 4 evidence

23 transaction lines in the latest 365-day window; 314 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-04-02Kalayoglu MuratOption exercise / conversion (M)Common Stock758,001USD —USD —SEC filing ↗
2026-04-02Hoge Elizabeth; Seven One Eight Three Four Irrevocable TrustOption exercise / conversion (M)Common Stock758,001USD —USD —SEC filing ↗
2026-03-13Singer MichaelGift (G)Common Stock6,555USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (23 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-04-02Kalayoglu MuratOption exercise / conversion (M)Common Stock758,001USD —USD —SEC filing ↗
2026-04-02Hoge Elizabeth; Seven One Eight Three Four Irrevocable TrustOption exercise / conversion (M)Common Stock758,001USD —USD —SEC filing ↗
2026-03-13Singer MichaelGift (G)Common Stock6,555USD 0.00USD 0SEC filing ↗
2026-01-06Miljkovic MilosSale (S)Common Stock3,573USD 6.82USD 24,368SEC filing ↗
2026-01-06Davis BlaineSale (S)Common Stock10,591USD 6.82USD 72,231SEC filing ↗
2026-01-06Brunn CarstenSale (S)Common Stock23,766USD 6.82USD 162,084SEC filing ↗
2026-01-02ZENNER PATRICK JAward / grant (A)Common Stock2,600USD 0.00USD 0SEC filing ↗
2026-01-02Singer MichaelAward / grant (A)Common Stock2,600USD 0.00USD 0SEC filing ↗
2026-01-02Seymour June AnnAward / grant (A)Common Stock6,500USD 0.00USD 0SEC filing ↗
2026-01-02SPRINGER TIMOTHY AAward / grant (A)Common Stock2,600USD 0.00USD 0SEC filing ↗
2026-01-02Miljkovic MilosAward / grant (A)Common Stock27,000USD 0.00USD 0SEC filing ↗
2026-01-02Malik KemalAward / grant (A)Common Stock2,600USD 0.00USD 0SEC filing ↗
2026-01-02Kalayoglu MuratAward / grant (A)Common Stock2,600USD 0.00USD 0SEC filing ↗
2026-01-02English EmilyAward / grant (A)Common Stock24,000USD 0.00USD 0SEC filing ↗
2026-01-02DeSilva Nishan MAward / grant (A)Common Stock2,600USD 0.00USD 0SEC filing ↗
2026-01-02Davis BlaineAward / grant (A)Common Stock37,000USD 0.00USD 0SEC filing ↗
2026-01-02Brunn CarstenAward / grant (A)Common Stock143,200USD 0.00USD 0SEC filing ↗
2026-01-02BARABE TIMOTHY CAward / grant (A)Common Stock2,600USD 0.00USD 0SEC filing ↗
2025-12-30English EmilyOption exercise / conversion (M)Common Stock7,500USD 3.30USD 24,750SEC filing ↗
2025-12-16Bot Adrian IonAward / grant (A)Common Stock5,800USD 0.00USD 0SEC filing ↗
2025-12-04BARABE TIMOTHY CPurchase (P)Common Stock30,000USD 6.86USD 205,800SEC filing ↗
2025-11-28English EmilyOption exercise / conversion (M)Common Stock7,500USD 3.30USD 24,750SEC filing ↗
2025-11-18Singer MichaelGift (G)Common Stock20,000USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerRNAC
CIK0001453687
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history314 transaction lines from 2020-01-16 to 2026-04-02
86 P purchase lines · 75 S sale lines · 153 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.