Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-19 · Built: 2026-10-19 · 中文

← United States · Coverage record

US · SEC FORM 4

Mineralys Therapeutics, Inc.

MLYS · Nasdaq · CIK 0001933414 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

47 Form 4 transaction lines observed in the same window
24 sales · 23 option, withholding, award, gift or other lines

Last qualifying purchase2026-03-30 · Kolchinsky Peter; RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund III, L.P.; Shah Rajeev M. · $1.4M

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
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.

Purchase breadth, concentration & cluster buying

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

Insider activity timeline

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

AprMayJunJulAugSepOct
Rodman David MalcomChief Medical Officer
○▼○▼○▼○▼○▼○▼○▼○▼○▼○▼▼○▼○▼
Warren EricChief Commercial Officer
○▼○▼○▼○▼
Karydas DaphneDirector
○▼○▼
Congleton JonChief Executive Officer
▼▼▼
Slingsby Brian TaylorDirector
▼
Ferguson James J. IIIChief Medical Officer
○
● Purchase▼ Sale○ Other

—

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: 2026-03-30 · Kolchinsky Peter; RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund III, L.P.; Shah Rajeev M..

Recent Form 4 activity

2Purchases
76Sales
74Other Form 4 lines
52SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING24 sale line(s) · context only
OTHER23 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
7,805,612
Previous report
9,181,891
Avg daily volume
1,513,825
Days to cover
5.2

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
2026-03-30Kolchinsky Peter; RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund III, L.P.; Shah Rajeev M.Purchase (P)Common Stock58,300USD 24.16USD 1,408,528SEC filing ↗
2026-03-27Kolchinsky Peter; RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund III, L.P.; Shah Rajeev M.Purchase (P)Common Stock310,700USD 23.67USD 7,354,269SEC filing ↗
2025-09-04Kolchinsky Peter; RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund III, L.P.; Shah Rajeev M.Purchase (P)Common Stock1,176,470USD 25.50USD 29,999,985SEC filing ↗
2025-09-04AKKARAJU SRINIVASPurchase (P)Common Stock588,235USD 25.50USD 14,999,992SEC filing ↗
2025-03-13Catalys Pacific Fund, LP; Slingsby Brian TaylorPurchase (P)Common Stock259,259USD 13.50USD 3,499,996SEC filing ↗
2025-03-13Samsara BioCapital GP, LLC; Samsara BioCapital, L.P.Purchase (P)Common Stock600,000USD 13.50USD 8,100,000SEC filing ↗
2025-03-13Kolchinsky Peter; RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund III, L.P.; Shah Rajeev M.Purchase (P)Common Stock1,296,296USD 13.50USD 17,499,996SEC filing ↗
2025-03-13AKKARAJU SRINIVASPurchase (P)Common Stock600,000USD 13.50USD 8,100,000SEC filing ↗
2024-02-12Samsara BioCapital GP, LLC; Samsara BioCapital, L.P.Purchase (P)Common Stock555,555USD 13.50USD 7,499,992SEC filing ↗
2023-11-22Congleton JonPurchase (P)Common Stock4,250USD 5.97USD 25,372SEC filing ↗
2023-09-06Congleton JonPurchase (P)Common Stock2,250USD 12.08USD 27,180SEC filing ↗
2023-08-17Congleton JonPurchase (P)Common Stock2,250USD 12.10USD 27,225SEC filing ↗
2023-08-11Congleton JonPurchase (P)Common Stock2,000USD 12.89USD 25,780SEC filing ↗
2023-02-14Levy Adam ScottPurchase (P)Common Stock6,250USD 16.00USD 100,000SEC filing ↗
2023-02-14Kolchinsky Peter; RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund III, L.P.; Shah Rajeev M.Purchase (P)Common Stock1,250,000USD 16.00USD 20,000,000SEC filing ↗

Form 4 evidence

152 transaction lines in the latest 365-day window; 265 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30Congleton JonSale (S)Common Stock75,000USD 25.46USD 1,909,665SEC filing ↗
2026-09-22Slingsby Brian TaylorSale (S)Common Stock104,320USD 28.81USD 3,005,459SEC filing ↗
2026-09-21Warren EricSale (S)Common Stock7,438USD 28.12USD 209,157SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30Congleton JonSale (S)Common Stock75,000USD 25.46USD 1,909,665SEC filing ↗
2026-09-22Slingsby Brian TaylorSale (S)Common Stock104,320USD 28.81USD 3,005,459SEC filing ↗
2026-09-21Warren EricSale (S)Common Stock7,438USD 28.12USD 209,157SEC filing ↗
2026-09-21Warren EricOption exercise / conversion (M)Common Stock7,438USD 13.24USD 98,479SEC filing ↗
2026-09-15Karydas DaphneSale (S)Common Stock3,000USD 28.58USD 85,740SEC filing ↗
2026-09-15Karydas DaphneOption exercise / conversion (M)Common Stock3,000USD 12.02USD 36,060SEC filing ↗
2026-08-21Warren EricSale (S)Common Stock7,437USD 25.98USD 193,213SEC filing ↗
2026-08-21Warren EricOption exercise / conversion (M)Common Stock7,437USD 13.24USD 98,466SEC filing ↗
2026-08-10Rodman David MalcomSale (S)Common Stock2,170USD 27.09USD 58,785SEC filing ↗
2026-08-10Rodman David MalcomOption exercise / conversion (M)Common Stock2,170USD 16.00USD 34,720SEC filing ↗
2026-08-10Ferguson James J. IIIAward / grant (A)Common Stock102,400USD 0.00USD 0SEC filing ↗
2026-07-21Warren EricSale (S)Common Stock7,438USD 26.87USD 199,859SEC filing ↗
2026-07-21Warren EricOption exercise / conversion (M)Common Stock7,438USD 13.24USD 98,479SEC filing ↗
2026-07-17Rodman David MalcomSale (S)Common Stock416USD 26.53USD 11,036SEC filing ↗
2026-07-17Rodman David MalcomOption exercise / conversion (M)Common Stock416USD 15.44USD 6,423SEC filing ↗
2026-07-15Rodman David MalcomSale (S)Common Stock6,349USD 26.61USD 168,947SEC filing ↗
2026-07-13Rodman David MalcomSale (S)Common Stock14,058USD 27.58USD 387,720SEC filing ↗
2026-07-13Rodman David MalcomOption exercise / conversion (M)Common Stock14,058USD 7.28USD 102,365SEC filing ↗
2026-07-13Congleton JonSale (S)Common Stock10,700USD 27.24USD 291,468SEC filing ↗
2026-07-09Rodman David MalcomSale (S)Common Stock2,171USD 30.30USD 65,781SEC filing ↗
2026-07-09Rodman David MalcomOption exercise / conversion (M)Common Stock2,171USD 16.00USD 34,736SEC filing ↗
2026-06-30Congleton JonSale (S)Common Stock75,000USD 26.14USD 1,960,460SEC filing ↗
2026-06-26Warren EricSale (S)Common Stock104,124USD 25.90USD 2,696,812SEC filing ↗
2026-06-26Warren EricOption exercise / conversion (M)Common Stock104,124USD 13.24USD 1,378,602SEC filing ↗
2026-06-17Rodman David MalcomSale (S)Common Stock4,584USD 25.00USD 114,600SEC filing ↗
2026-06-17Rodman David MalcomOption exercise / conversion (M)Common Stock4,584USD 14.36USD 65,818SEC filing ↗
2026-06-17Karydas DaphneSale (S)Common Stock3,000USD 25.00USD 75,000SEC filing ↗
2026-06-17Karydas DaphneOption exercise / conversion (M)Common Stock3,000USD 12.02USD 36,060SEC filing ↗
2026-06-15Rodman David MalcomSale (S)Common Stock9,890USD 23.81USD 235,481SEC filing ↗
2026-06-15Rodman David MalcomOption exercise / conversion (M)Common Stock3,542USD 10.20USD 36,128SEC 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 date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerMLYS
CIK0001933414
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history265 transaction lines from 2023-02-14 to 2026-09-30
19 P purchase lines · 122 S sale lines · 124 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.