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

Disc Medicine, Inc.

IRON · Nasdaq · CIK 0001816736 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

59 Form 4 transaction lines observed in the same window
39 sales · 20 option, withholding, award, gift or other lines

Last qualifying purchase2024-06-17 · Bitterman Kevin · $8.0M

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.

Insider activity timeline

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

AprMayJunJulAugSepOct
Yu Jonathan Yen-WenChief Operating Officer
○▼○▼○▼○▼○▼○▼
Quisel John DChief Executive Officer
○▼○▼○▼○
Bitterman KevinDirector
▼▼▼▼○▼
Khara RahulChief Legal Officer
○▼○▼○▼
● 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: 2024-06-17 · Bitterman Kevin.

Recent Form 4 activity

0Purchases
92Sales
35Other Form 4 lines
42SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING39 sale line(s) · context only
OTHER20 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
7,270,420
Previous report
7,207,702
Avg daily volume
568,317
Days to cover
12.8

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
2024-06-17ORBIMED ADVISORS LLC; OrbiMed Capital GP VI LLC; OrbiMed Capital GP VIII LLC; OrbiMed Genesis GP LLCPurchase (P)Common Stock83,334USD 36.00USD 3,000,024SEC filing ↗
2024-06-17Bitterman KevinPurchase (P)Common Stock222,223USD 36.00USD 8,000,028SEC filing ↗
2024-06-17Ashiya MonaPurchase (P)Common Stock83,334USD 36.00USD 3,000,024SEC filing ↗
2023-02-15ORBIMED ADVISORS LLC; OrbiMed Capital GP VI LLC; OrbiMed Capital GP VIII LLC; OrbiMed Genesis GP LLCPurchase (P)Common Stock108,696USD 23.00USD 2,500,008SEC filing ↗
2023-02-15Ashiya MonaPurchase (P)Common Stock108,696USD 23.00USD 2,500,008SEC filing ↗
2023-02-15ACCESS INDUSTRIES MANAGEMENT, LLC; AI DMI LLC; Access Industries Holdings LLC; Blavatnik LenPurchase (P)Common Stock434,783USD 23.00USD 10,000,009SEC filing ↗
2022-04-13Leonard Braden MichaelPurchase (P)Common Stock191,769USD 1.52USD 291,489SEC filing ↗
2022-04-12Leonard Braden MichaelPurchase (P)Common Stock258,744USD 1.41USD 364,666SEC filing ↗
2022-04-11Leonard Braden MichaelPurchase (P)Common Stock504,487USD 1.35USD 681,057SEC filing ↗
2021-05-14Piekos BrianPurchase (P)Common Stock7,655USD 9.46USD 72,416SEC filing ↗
2021-05-14Meyenburg Jason PatrickPurchase (P)Common Stock13,000USD 9.46USD 122,980SEC filing ↗
2020-08-14FS Development Holdings, LLC; Foresite Capital Fund V, L.P.; Foresite Capital Management V, LLC; Tananbaum James B.Purchase (P)Class A Common Stock441,500USD 10.00USD 4,415,000SEC filing ↗

Form 4 evidence

127 transaction lines in the latest 365-day window; 482 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-15Quisel John DOption exercise / conversion (M)Common Stock36,000USD 1.01USD 36,360SEC filing ↗
2026-09-11Bitterman KevinSale (S)Common Stock27,136USD 70.11USD 1,902,505SEC filing ↗
2026-09-11Bitterman KevinOption exercise / conversion (M)Common Stock27,136USD 45.07USD 1,223,144SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-15Quisel John DOption exercise / conversion (M)Common Stock36,000USD 1.01USD 36,360SEC filing ↗
2026-09-11Bitterman KevinSale (S)Common Stock27,136USD 70.11USD 1,902,505SEC filing ↗
2026-09-11Bitterman KevinOption exercise / conversion (M)Common Stock27,136USD 45.07USD 1,223,144SEC filing ↗
2026-09-04Bitterman KevinSale (S)Common Stock1,689USD 79.96USD 135,052SEC filing ↗
2026-09-03Bitterman KevinSale (S)Common Stock5,203USD 79.98USD 416,136SEC filing ↗
2026-09-02Bitterman KevinSale (S)Common Stock49,164USD 80.17USD 3,941,495SEC filing ↗
2026-09-01Bitterman KevinSale (S)Common Stock129USD 79.95USD 10,314SEC filing ↗
2026-08-25Yu Jonathan Yen-WenSale (S)Common Stock8,796USD 83.12USD 731,124SEC filing ↗
2026-08-25Yu Jonathan Yen-WenOption exercise / conversion (M)Common Stock8,796USD 13.50USD 118,746SEC filing ↗
2026-08-24Yu Jonathan Yen-WenSale (S)Common Stock300USD 82.53USD 24,759SEC filing ↗
2026-08-24Yu Jonathan Yen-WenOption exercise / conversion (M)Common Stock300USD 13.50USD 4,050SEC filing ↗
2026-08-17Quisel John DSale (S)Common Stock33,000USD 79.15USD 2,612,052SEC filing ↗
2026-08-17Quisel John DOption exercise / conversion (M)Common Stock33,000USD 13.50USD 445,500SEC filing ↗
2026-08-12Yu Jonathan Yen-WenSale (S)Common Stock804USD 82.64USD 66,443SEC filing ↗
2026-08-12Yu Jonathan Yen-WenOption exercise / conversion (M)Common Stock804USD 13.50USD 10,854SEC filing ↗
2026-08-06Khara RahulSale (S)Common Stock5,000USD 80.00USD 400,000SEC filing ↗
2026-08-06Khara RahulOption exercise / conversion (M)Common Stock5,000USD 14.69USD 73,450SEC filing ↗
2026-07-13Quisel John DSale (S)Common Stock33,000USD 74.96USD 2,473,791SEC filing ↗
2026-07-13Quisel John DOption exercise / conversion (M)Common Stock33,000USD 10.68USD 352,374SEC filing ↗
2026-07-07Yu Jonathan Yen-WenSale (S)Common Stock100USD 82.50USD 8,250SEC filing ↗
2026-07-07Yu Jonathan Yen-WenOption exercise / conversion (M)Common Stock100USD 13.50USD 1,350SEC filing ↗
2026-06-29Khara RahulSale (S)Common Stock1,649USD 75.00USD 123,675SEC filing ↗
2026-06-29Khara RahulOption exercise / conversion (M)Common Stock1,649USD 14.69USD 24,224SEC filing ↗
2026-06-26Yu Jonathan Yen-WenSale (S)Common Stock300USD 72.50USD 21,750SEC filing ↗
2026-06-26Yu Jonathan Yen-WenOption exercise / conversion (M)Common Stock300USD 13.50USD 4,050SEC filing ↗
2026-06-26Khara RahulSale (S)Common Stock851USD 75.00USD 63,825SEC filing ↗
2026-06-26Khara RahulOption exercise / conversion (M)Common Stock851USD 14.69USD 12,501SEC filing ↗
2026-06-22Yu Jonathan Yen-WenSale (S)Common Stock9,700USD 72.66USD 704,802SEC filing ↗
2026-06-22Yu Jonathan Yen-WenOption exercise / conversion (M)Common Stock9,700USD 13.50USD 130,950SEC filing ↗
2026-06-18Quisel John DSale (S)Common Stock34,000USD 70.22USD 2,387,328SEC 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 · —
TickerIRON
CIK0001816736
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history482 transaction lines from 2020-08-14 to 2026-09-15
21 P purchase lines · 350 S sale lines · 111 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.