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

Penumbra Inc

PEN · NYSE · CIK 0001321732 · Healthcare · Medical Devices

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchaseNo qualifying purchase is present in the local Form 4 history.

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.

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
Narayan ShruthiPresident
○○○
Elsesser AdamCEO
○
● 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.—

Recent Form 4 activity

0Purchases
32Sales
41Other Form 4 lines
39SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER4 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
2,245,649
Previous report
1,805,942
Avg daily volume
472,607
Days to cover
4.8

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

No qualifying code P equity purchase is present in the local Form 4 history.

Form 4 evidence

73 transaction lines in the latest 365-day window; 1,134 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-15Narayan ShruthiTax withholding (F)Common Stock1,367USD 321.20USD 439,080SEC filing ↗
2026-09-15Narayan ShruthiTax withholding (F)Common Stock1,230USD 318.43USD 391,669SEC filing ↗
2026-08-17Narayan ShruthiAward / grant (A)Common Stock3,060USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-15Narayan ShruthiTax withholding (F)Common Stock1,367USD 321.20USD 439,080SEC filing ↗
2026-09-15Narayan ShruthiTax withholding (F)Common Stock1,230USD 318.43USD 391,669SEC filing ↗
2026-08-17Narayan ShruthiAward / grant (A)Common Stock3,060USD 0.00USD 0SEC filing ↗
2026-05-19Elsesser AdamGift (G)Common Stock77,000USD 0.00USD 0SEC filing ↗
2026-04-02Grewal HarpreetSale (S)Common Stock100USD 328.22USD 32,822SEC filing ↗
2026-03-15Yuen MaggieTax withholding (F)Common Stock186USD 336.18USD 62,529SEC filing ↗
2026-03-15Shiu LambertTax withholding (F)Common Stock150USD 336.18USD 50,427SEC filing ↗
2026-03-15Roberts JohannaTax withholding (F)Common Stock186USD 336.18USD 62,529SEC filing ↗
2026-03-15Narayan ShruthiTax withholding (F)Common Stock117USD 336.18USD 39,333SEC filing ↗
2026-03-02Yuen MaggieSale (S)Common Stock2,432USD 342.30USD 832,474SEC filing ↗
2026-02-17Yuen MaggieAward / grant (A)Common Stock2,630USD 0.00USD 0SEC filing ↗
2026-02-17Shiu LambertAward / grant (A)Common Stock2,300USD 0.00USD 0SEC filing ↗
2026-02-17Roberts JohannaAward / grant (A)Common Stock2,630USD 0.00USD 0SEC filing ↗
2026-02-17Narayan ShruthiAward / grant (A)Common Stock2,630USD 0.00USD 0SEC filing ↗
2026-02-15Yuen MaggieTax withholding (F)Common Stock481USD 339.30USD 163,203SEC filing ↗
2026-02-15Shiu LambertTax withholding (F)Common Stock412USD 339.30USD 139,792SEC filing ↗
2026-02-15Roberts JohannaTax withholding (F)Common Stock482USD 339.30USD 163,543SEC filing ↗
2026-02-15Narayan ShruthiTax withholding (F)Common Stock705USD 339.30USD 239,206SEC filing ↗
2026-02-13Yuen MaggieAward / grant (A)Common Stock2,630USD 0.00USD 0SEC filing ↗
2026-02-13Wilder ThomasAward / grant (A)Common Stock589USD 0.00USD 0SEC filing ↗
2026-02-13Shiu LambertAward / grant (A)Common Stock2,300USD 0.00USD 0SEC filing ↗
2026-02-13Sarna SurbhiAward / grant (A)Common Stock589USD 0.00USD 0SEC filing ↗
2026-02-13Roberts JohannaAward / grant (A)Common Stock2,630USD 0.00USD 0SEC filing ↗
2026-02-13O'Rourke BridgetAward / grant (A)Common Stock589USD 0.00USD 0SEC filing ↗
2026-02-13Narayan ShruthiAward / grant (A)Common Stock2,630USD 0.00USD 0SEC filing ↗
2026-02-13Leeds JanetAward / grant (A)Common Stock589USD 0.00USD 0SEC filing ↗
2026-02-13Grewal HarpreetAward / grant (A)Common Stock589USD 0.00USD 0SEC filing ↗
2026-02-13Bose AraniAward / grant (A)Common Stock589USD 0.00USD 0SEC filing ↗
2026-01-15Narayan ShruthiTax withholding (F)Common Stock286USD 350.49USD 100,240SEC filing ↗
2026-01-06Grewal HarpreetSale (S)Common Stock186USD 312.64USD 58,151SEC 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 · —
TickerPEN
CIK0001321732
SectorHealthcare
IndustryMedical Devices Yahoo Finance
SEC SIC3841 Surgical & Medical Instruments & Apparatus
ExchangeNYSE

Data coverage

Local Form 4 history1,134 transaction lines from 2020-01-02 to 2026-10-15
0 P purchase lines · 917 S sale lines · 217 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.