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

C4 Therapeutics, Inc.

CCCC · Nasdaq · CIK 0001662579 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

9 Form 4 transaction lines observed in the same window
0 sales · 9 option, withholding, award, gift or other lines

Last qualifying purchase2023-02-08 · Koppikar Utpal · $31.7K

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

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Anderson Kenneth CarlDirector
○○○
Adams KendraChief Financial Officer
○○
REYNO LEONARDChief Medical Officer
○○
GROGAN DONNA ROYDirector
○○
● Purchase▼ Sale○ Other

—

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: 2023-02-08 · Koppikar Utpal.

Recent Form 4 activity

0Purchases
1Sales
44Other Form 4 lines
20SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER9 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
40,395,665
Previous report
40,189,287
Avg daily volume
2,289,003
Days to cover
17.6

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
2023-02-08Koppikar UtpalPurchase (P)Common Stock5,667USD 5.60USD 31,735SEC filing ↗
2022-04-12Hirsch AndrewPurchase (P)Common Stock10,000USD 8.40USD 84,000SEC filing ↗
2020-10-06Salter MalcolmPurchase (P)Common Stock1,315USD 19.00USD 24,985SEC filing ↗
2020-10-06MCKEE WILLIAMPurchase (P)Common Stock5,263USD 19.00USD 99,997SEC filing ↗
2020-10-06COHEN MARC APurchase (P)Common Stock5,030USD 19.00USD 95,570SEC filing ↗

Form 4 evidence

45 transaction lines in the latest 365-day window; 321 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01GROGAN DONNA ROYAward / grant (A)Common Stock4,618USD 3.14USD 14,501SEC filing ↗
2026-10-01Anderson Kenneth CarlAward / grant (A)Common Stock3,662USD 3.14USD 11,499SEC filing ↗
2026-09-18Adams KendraOption exercise / conversion (M)Common Stock6,250USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-01GROGAN DONNA ROYAward / grant (A)Common Stock4,618USD 3.14USD 14,501SEC filing ↗
2026-10-01Anderson Kenneth CarlAward / grant (A)Common Stock3,662USD 3.14USD 11,499SEC filing ↗
2026-09-18Adams KendraOption exercise / conversion (M)Common Stock6,250USD 0.00USD 0SEC filing ↗
2026-09-18Adams KendraTax withholding (F)Common Stock2,775USD 3.39USD 9,407SEC filing ↗
2026-07-10REYNO LEONARDOption exercise / conversion (M)Common Stock15,325USD 0.00USD 0SEC filing ↗
2026-07-10REYNO LEONARDTax withholding (F)Common Stock7,397USD 4.06USD 30,032SEC filing ↗
2026-07-01GROGAN DONNA ROYAward / grant (A)Common Stock3,341USD 4.34USD 14,500SEC filing ↗
2026-07-01Anderson Kenneth CarlAward / grant (A)Common Stock2,650USD 4.34USD 11,501SEC filing ↗
2026-06-01Anderson Kenneth CarlOption exercise / conversion (M)Common Stock1,070USD 2.11USD 2,258SEC filing ↗
2026-04-01GROGAN DONNA ROYAward / grant (A)Common Stock5,370USD 2.70USD 14,499SEC filing ↗
2026-04-01Anderson Kenneth CarlAward / grant (A)Common Stock4,259USD 2.70USD 11,499SEC filing ↗
2026-02-15Hirsch AndrewOption exercise / conversion (M)Common Stock20,400USD 0.00USD 0SEC filing ↗
2026-02-15Hirsch AndrewTax withholding (F)Common Stock9,057USD 1.89USD 17,118SEC filing ↗
2026-02-14Schick KellyOption exercise / conversion (M)Common Stock20,950USD 0.00USD 0SEC filing ↗
2026-02-14Schick KellyTax withholding (F)Common Stock7,269USD 1.89USD 13,738SEC filing ↗
2026-02-14REYNO LEONARDOption exercise / conversion (M)Common Stock30,950USD 0.00USD 0SEC filing ↗
2026-02-14REYNO LEONARDTax withholding (F)Common Stock16,579USD 1.89USD 31,334SEC filing ↗
2026-02-14Mossler MarkOption exercise / conversion (M)Common Stock9,420USD 0.00USD 0SEC filing ↗
2026-02-14Mossler MarkTax withholding (F)Common Stock3,268USD 1.89USD 6,177SEC filing ↗
2026-02-14Mahaney PaigeOption exercise / conversion (M)Common Stock7,050USD 0.00USD 0SEC filing ↗
2026-02-14Mahaney PaigeTax withholding (F)Common Stock2,446USD 1.89USD 4,623SEC filing ↗
2026-02-14Hirsch AndrewOption exercise / conversion (M)Common Stock81,725USD 0.00USD 0SEC filing ↗
2026-02-14Hirsch AndrewTax withholding (F)Common Stock39,154USD 1.89USD 74,001SEC filing ↗
2026-02-14Boyle Scott NOption exercise / conversion (M)Common Stock20,950USD 0.00USD 0SEC filing ↗
2026-02-14Boyle Scott NTax withholding (F)Common Stock7,269USD 1.89USD 13,738SEC filing ↗
2026-02-14Adams KendraOption exercise / conversion (M)Common Stock30,950USD 0.00USD 0SEC filing ↗
2026-02-14Adams KendraTax withholding (F)Common Stock15,381USD 1.89USD 29,070SEC filing ↗
2026-02-13Schick KellyOption exercise / conversion (M)Common Stock5,000USD 0.00USD 0SEC filing ↗
2026-02-13Schick KellyTax withholding (F)Common Stock1,735USD 1.89USD 3,279SEC filing ↗
2026-02-13Schick KellyAward / grant (A)Common Stock200,000USD 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 · —
TickerCCCC
CIK0001662579
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2836 Biological Products, (No Diagnostic Substances)
ExchangeNasdaq

Data coverage

Local Form 4 history321 transaction lines from 2020-10-06 to 2026-10-01
5 P purchase lines · 52 S sale lines · 264 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.