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

Fortinet, Inc.

FTNT · Nasdaq · CIK 0001262039 · Technology · Software—Infrastructure

INSIDER SIGNAL

No active buy signal

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

101 Form 4 transaction lines observed in the same window
44 sales · 57 option, withholding, award, gift or other lines

Last qualifying purchase2025-06-06 · NEUKOM WILLIAM H. · $34.9K

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
Ohlgart ChristianeChief Financial Officer
○○▼▼▼▼▼○○▼▼
Whittle JohnCHIEF OPERATING OFFICER
○○○▼○○○▼○▼
Xie MichaelVP, ENGINEERING & CTO
○○▼○▼○○○▼
Xie KenPRESIDENT & CEO
○○▼○▼○○○▼
GOLDMAN KENNETH ADirector
○○○
Sim JudithDirector
○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 5 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: 2025-06-06 · NEUKOM WILLIAM H..

Recent Form 4 activity

0Purchases
58Sales
103Other Form 4 lines
49SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING44 sale line(s) · context only
OTHER57 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
12,503,836
Previous report
13,718,909
Avg daily volume
4,278,774
Days to cover
2.9

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
2025-06-06NEUKOM WILLIAM H.Purchase (P)Common Stock335USD 104.22USD 34,914SEC filing ↗
2025-03-06NEUKOM WILLIAM H.Purchase (P)Common Stock328USD 106.34USD 34,880SEC filing ↗
2024-12-06NEUKOM WILLIAM H.Purchase (P)Common Stock355USD 98.50USD 34,968SEC filing ↗
2024-09-06NEUKOM WILLIAM H.Purchase (P)Common Stock459USD 76.18USD 34,967SEC filing ↗
2024-06-06NEUKOM WILLIAM H.Purchase (P)Common Stock586USD 59.55USD 34,896SEC filing ↗
2024-03-06NEUKOM WILLIAM H.Purchase (P)Common Stock497USD 70.30USD 34,939SEC filing ↗
2023-12-06NEUKOM WILLIAM H.Purchase (P)Common Stock664USD 52.63USD 34,946SEC filing ↗
2023-09-08NEUKOM WILLIAM H.Purchase (P)Common Stock552USD 63.28USD 34,931SEC filing ↗
2023-04-11NEUKOM WILLIAM H.Purchase (P)Common Stock423USD 67.40USD 28,510SEC filing ↗
2023-04-11NEUKOM WILLIAM H.Purchase (P)Common Stock423USD 67.40USD 28,510SEC filing ↗
2022-11-30NEUKOM WILLIAM H.Purchase (P)Common Stock500USD 51.20USD 25,600SEC filing ↗
2022-08-31NEUKOM WILLIAM H.Purchase (P)Common Stock500USD 48.96USD 24,480SEC filing ↗
2022-02-15NEUKOM WILLIAM H.Purchase (P)Common Stock375USD 64.49USD 24,184SEC filing ↗
2021-12-02NEUKOM WILLIAM H.Purchase (P)Common Stock400USD 62.29USD 24,916SEC filing ↗
2021-08-25NEUKOM WILLIAM H.Purchase (P)Common Stock400USD 60.46USD 24,184SEC filing ↗

Form 4 evidence

161 transaction lines in the latest 365-day window; 1,520 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30Sim JudithOption exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-30STAVRIDIS JAMES G.Option exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-30Napolitano JanetOption exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30Sim JudithOption exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-30STAVRIDIS JAMES G.Option exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-30Napolitano JanetOption exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-30Kan Derek T.Option exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-30Hu Jean X.Option exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-30Hsieh MingOption exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-30GOLDMAN KENNETH AOption exercise / conversion (M)Common Stock459USD 0.00USD 0SEC filing ↗
2026-09-24Ohlgart ChristianeSale (S)Common Stock48USD 180.00USD 8,640SEC filing ↗
2026-09-15Whittle JohnSale (S)Common Stock2,835USD 168.74USD 478,378SEC filing ↗
2026-09-15Whittle JohnOption exercise / conversion (M)Common Stock2,835USD 62.11USD 176,082SEC filing ↗
2026-09-14Whittle JohnSale (S)Common Stock53,865USD 165.44USD 8,911,570SEC filing ↗
2026-09-14Whittle JohnOption exercise / conversion (M)Common Stock53,865USD 62.11USD 3,345,555SEC filing ↗
2026-08-04Ohlgart ChristianeSale (S)Common Stock387USD 164.59USD 63,696SEC filing ↗
2026-08-03Xie MichaelSale (S)Common Stock3,121USD 162.63USD 507,580SEC filing ↗
2026-08-03Xie KenSale (S)Common Stock161,482USD 162.66USD 26,266,720SEC filing ↗
2026-08-03Xie KenOption exercise / conversion (M)Common Stock155,000USD 22.90USD 3,549,500SEC filing ↗
2026-08-01Xie MichaelOption exercise / conversion (M)Common Stock6,306USD 0.00USD 0SEC filing ↗
2026-08-01Xie MichaelTax withholding (F)Common Stock3,185USD 161.95USD 515,811SEC filing ↗
2026-08-01Xie KenOption exercise / conversion (M)Common Stock13,093USD 0.00USD 0SEC filing ↗
2026-08-01Xie KenTax withholding (F)Common Stock6,611USD 161.95USD 1,070,651SEC filing ↗
2026-08-01Whittle JohnOption exercise / conversion (M)Common Stock4,573USD 0.00USD 0SEC filing ↗
2026-08-01Whittle JohnTax withholding (F)Common Stock2,310USD 161.95USD 374,104SEC filing ↗
2026-08-01Ohlgart ChristianeOption exercise / conversion (M)Common Stock1,634USD 0.00USD 0SEC filing ↗
2026-08-01Ohlgart ChristianeTax withholding (F)Common Stock581USD 161.95USD 94,093SEC filing ↗
2026-06-11Sim JudithOption exercise / conversion (M)Common Stock650USD 0.00USD 0SEC filing ↗
2026-06-11STAVRIDIS JAMES G.Option exercise / conversion (M)Common Stock650USD 0.00USD 0SEC filing ↗
2026-06-11Napolitano JanetOption exercise / conversion (M)Common Stock650USD 0.00USD 0SEC filing ↗
2026-06-11Hu Jean X.Option exercise / conversion (M)Common Stock650USD 0.00USD 0SEC filing ↗
2026-06-11Hsieh MingOption exercise / conversion (M)Common Stock650USD 0.00USD 0SEC filing ↗
2026-06-11GOLDMAN KENNETH AOption exercise / conversion (M)Common Stock650USD 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 · —
TickerFTNT
CIK0001262039
SectorTechnology
IndustrySoftware—Infrastructure Yahoo Finance
SEC SIC3577 Computer Peripheral Equipment, NEC
ExchangeNasdaq

Data coverage

Local Form 4 history1,520 transaction lines from 2020-02-01 to 2026-09-30
20 P purchase lines · 617 S sale lines · 883 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.