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

RHYTHM PHARMACEUTICALS, INC.

RYTM · Nasdaq · CIK 0001649904 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

40 Form 4 transaction lines observed in the same window
22 sales · 18 option, withholding, award, gift or other lines

Last qualifying purchase2021-03-30 · Meeker David P · $201.7K

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
TETRAULT LYNN A.Director
○▼○
Smith Hunter CChief Financial Officer
○○▼
Garfield AlastairChief Scientific Officer
○○▼
Meeker David PPresident and CEO
○▼
German Christopher PaulCorporate Controller & CAO
○▼
Shulman JosephChief Technical Officer
○▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.

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: 2021-03-30 · Meeker David P.

Recent Form 4 activity

0Purchases
52Sales
49Other Form 4 lines
38SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING22 sale line(s) · context only
OTHER18 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
10,767,698
Previous report
10,287,811
Avg daily volume
761,706
Days to cover
14.1

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
2021-03-30Meeker David PPurchase (P)Common Stock10,000USD 20.17USD 201,700SEC filing ↗

Form 4 evidence

101 transaction lines in the latest 365-day window; 487 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-14Meeker David PSale (S)Common Stock50,000USD 102.67USD 5,133,560SEC filing ↗
2026-09-14Meeker David POption exercise / conversion (M)Common Stock50,000USD 6.05USD 302,500SEC filing ↗
2026-08-31Smith Hunter CSale (S)Common Stock62,774USD 105.46USD 6,619,896SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-14Meeker David PSale (S)Common Stock50,000USD 102.67USD 5,133,560SEC filing ↗
2026-09-14Meeker David POption exercise / conversion (M)Common Stock50,000USD 6.05USD 302,500SEC filing ↗
2026-08-31Smith Hunter CSale (S)Common Stock62,774USD 105.46USD 6,619,896SEC filing ↗
2026-08-31Smith Hunter COption exercise / conversion (M)Common Stock57,187USD 25.79USD 1,474,853SEC filing ↗
2026-08-13Shulman JosephSale (S)Common Stock5,079USD 119.75USD 608,210SEC filing ↗
2026-08-13Shulman JosephOption exercise / conversion (M)Common Stock2,024USD 6.80USD 13,763SEC filing ↗
2026-08-13Garfield AlastairSale (S)Common Stock7,763USD 117.57USD 912,697SEC filing ↗
2026-08-13Lee Jennifer KaydenSale (S)Common Stock75,834USD 117.38USD 8,901,395SEC filing ↗
2026-08-13Lee Jennifer KaydenOption exercise / conversion (M)Common Stock56,601USD 17.62USD 997,037SEC filing ↗
2026-08-12Mazabraud YannSale (S)Common Stock57,000USD 116.15USD 6,620,591SEC filing ↗
2026-08-12Mazabraud YannOption exercise / conversion (M)Common Stock46,625USD 6.80USD 317,050SEC filing ↗
2026-07-01Garfield AlastairOption exercise / conversion (M)Common Stock4,445USD —USD —SEC filing ↗
2026-07-01Garfield AlastairTax withholding (F)Common Stock2,150USD 110.41USD 237,382SEC filing ↗
2026-06-23TETRAULT LYNN A.Option exercise / conversion (M)Common Stock4,712USD —USD —SEC filing ↗
2026-06-23MCGIRR DAVID W JOption exercise / conversion (M)Common Stock4,712USD —USD —SEC filing ↗
2026-06-23JEAN CHRISTOPHEOption exercise / conversion (M)Common Stock4,712USD —USD —SEC filing ↗
2026-06-23GOOD JENNIFER LOption exercise / conversion (M)Common Stock4,712USD —USD —SEC filing ↗
2026-06-23Arbuckle Stuart AOption exercise / conversion (M)Common Stock4,712USD —USD —SEC filing ↗
2026-06-22TETRAULT LYNN A.Sale (S)Common Stock37,000USD 100.32USD 3,711,840SEC filing ↗
2026-06-22TETRAULT LYNN A.Option exercise / conversion (M)Common Stock37,000USD 28.27USD 1,045,990SEC filing ↗
2026-05-18Smith Hunter COption exercise / conversion (M)Common Stock3,000USD 17.87USD 53,610SEC filing ↗
2026-05-15German Christopher PaulSale (S)Common Stock4,643USD 92.21USD 428,131SEC filing ↗
2026-05-15German Christopher PaulOption exercise / conversion (M)Common Stock4,442USD 42.17USD 187,313SEC filing ↗
2026-04-01Mazabraud YannOption exercise / conversion (M)Common Stock12,875USD —USD —SEC filing ↗
2026-03-12Mathers Edward TJ (J)Common Stock4,199USD 0.00USD 0SEC filing ↗
2026-03-04German Christopher PaulSale (S)Common Stock5,614USD 89.56USD 502,790SEC filing ↗
2026-03-04German Christopher PaulOption exercise / conversion (M)Common Stock1,500USD 17.97USD 26,955SEC filing ↗
2026-03-02Mathers Edward TJ (J)Common Stock4,198USD 0.00USD 0SEC filing ↗
2026-03-02Smith Hunter COption exercise / conversion (M)Common Stock6,099USD 6.80USD 41,473SEC filing ↗
2026-03-01German Christopher PaulOption exercise / conversion (M)Common Stock1,162USD —USD —SEC 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 · —
TickerRYTM
CIK0001649904
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history487 transaction lines from 2020-01-08 to 2026-09-14
1 P purchase lines · 269 S sale lines · 217 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.