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

CALIX, INC

(CALX) · NYSE · CIK 0001406666 · Technology · Software—Infrastructure

INSIDER SIGNAL

No active buy signal

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

11 Form 4 transaction lines observed in the same window
3 sales · 8 option, withholding, award, gift or other lines

Last qualifying purchase2023-08-14 · Weening Michael · $11.9K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
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
Russo CarlDirector,TenPercentOwner
▼○▼
BOWICK CHRISTOPHER JDirector
○
BERRY MICHAEL JDirector
○
Mukherjee RajatishDirector
○
Oosterman WadeDirector
○
Peters Kevin RobertDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 2 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: 2023-08-14 · Weening Michael.

Recent Form 4 activity

0Purchases
17Sales
25Other Form 4 lines
26SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING3 sale line(s) · context only
OTHER8 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
5,331,659
Previous report
5,580,340
Avg daily volume
1,230,058
Days to cover
4.3

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
2023-08-14Weening MichaelPurchase (P)Common Stock341USD 34.98USD 11,928SEC filing ↗
2022-02-04LISTWIN DONALD JPurchase (P)Common Stock10,000USD 50.94USD 509,400SEC filing ↗
2021-11-04LISTWIN DONALD JPurchase (P)Common Stock23USD 74.36USD 1,710SEC filing ↗
2021-10-28LISTWIN DONALD JPurchase (P)Common Stock15,000USD 60.00USD 900,000SEC filing ↗
2021-08-14Weening MichaelPurchase (P)Common Stock337USD 31.28USD 10,541SEC filing ↗
2021-02-09LISTWIN DONALD JPurchase (P)Common Stock20,000USD 35.75USD 715,000SEC filing ↗
2020-11-10LISTWIN DONALD JPurchase (P)Common Stock20,000USD 22.53USD 450,600SEC filing ↗
2020-08-31SINDELAR CORYPurchase (P)Common Stock5,000USD 19.75USD 98,750SEC filing ↗
2020-08-26LISTWIN DONALD JPurchase (P)Common Stock21,936USD 20.40USD 447,494SEC filing ↗
2020-08-25LISTWIN DONALD JPurchase (P)Common Stock5,109USD 19.82USD 101,260SEC filing ↗
2020-08-24LISTWIN DONALD JPurchase (P)Common Stock22,955USD 19.98USD 458,641SEC filing ↗
2020-08-03LISTWIN DONALD JPurchase (P)Common Stock15,000USD 21.00USD 315,000SEC filing ↗
2020-05-01LISTWIN DONALD JPurchase (P)Common Stock30,000USD 12.11USD 363,300SEC filing ↗
2020-02-18LISTWIN DONALD JPurchase (P)Common Stock10,000USD 10.20USD 102,000SEC filing ↗
2020-02-07DENUCCIO KEVIN APurchase (P)Common Stock5,500USD 9.26USD 50,930SEC filing ↗

Form 4 evidence

42 transaction lines in the latest 365-day window; 221 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-27Russo CarlSale (S)Common Stock75,000USD 36.20USD 2,715,000SEC filing ↗
2026-05-14Russo CarlAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-05-14Peters Kevin RobertAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-27Russo CarlSale (S)Common Stock75,000USD 36.20USD 2,715,000SEC filing ↗
2026-05-14Russo CarlAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-05-14Peters Kevin RobertAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-05-14Oosterman WadeAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-05-14Mukherjee RajatishAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-05-14Makagon KiraAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-05-14CRUSCO KATHLEEN MAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-05-14BOWICK CHRISTOPHER JAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-05-14BERRY MICHAEL JAward / grant (A)Common Stock4,967USD 0.00USD 0SEC filing ↗
2026-04-27Russo CarlSale (S)Common Stock25,000USD 43.26USD 1,081,623SEC filing ↗
2026-04-08Russo CarlGift (G)Common Stock40,000USD 0.00USD 0SEC filing ↗
2026-02-25Russo CarlOption exercise / conversion (M)Common Stock10,000USD 12.63USD 126,300SEC filing ↗
2026-02-14Weening MichaelAward / grant (A)Common Stock439USD 45.32USD 19,895SEC filing ↗
2026-02-14SINDELAR CORYAward / grant (A)Common Stock439USD 45.32USD 19,895SEC filing ↗
2026-02-14Durocher JohnAward / grant (A)Common Stock439USD 45.32USD 19,895SEC filing ↗
2026-02-03Russo CarlSale (S)Common Stock25,000USD 47.27USD 1,181,662SEC filing ↗
2026-02-02SINDELAR CORYOption exercise / conversion (M)Common Stock27,000USD 5.05USD 136,350SEC filing ↗
2026-01-07Russo CarlOption exercise / conversion (M)Common Stock10,000USD 12.63USD 126,300SEC filing ↗
2025-11-24Russo CarlOption exercise / conversion (M)Common Stock10,000USD 12.63USD 126,300SEC filing ↗
2025-11-17Russo CarlOption exercise / conversion (M)Common Stock10,000USD 12.63USD 126,300SEC filing ↗
2025-11-10Eleniak Shane Todd MarshallSale (S)Common Stock24,000USD 64.14USD 1,539,360SEC filing ↗
2025-11-10Eleniak Shane Todd MarshallOption exercise / conversion (M)Common Stock24,000USD 8.03USD 192,720SEC filing ↗
2025-11-06SINDELAR CORYSale (S)Common Stock50,000USD 65.30USD 3,265,000SEC filing ↗
2025-11-06SINDELAR CORYOption exercise / conversion (M)Common Stock50,000USD 5.05USD 252,500SEC filing ↗
2025-11-06Russo CarlOption exercise / conversion (M)Common Stock200,000USD 12.63USD 2,526,000SEC filing ↗
2025-11-04Russo CarlSale (S)Common Stock420,000USD 64.09USD 26,919,345SEC filing ↗
2025-11-04Eleniak Shane Todd MarshallSale (S)Common Stock50,000USD 65.34USD 3,267,000SEC filing ↗
2025-11-04Eleniak Shane Todd MarshallOption exercise / conversion (M)Common Stock50,000USD 7.00USD 350,000SEC filing ↗
2025-11-03Weening MichaelSale (S)Common Stock74,000USD 67.42USD 4,989,080SEC filing ↗
2025-11-03Weening MichaelOption exercise / conversion (M)Common Stock74,000USD 7.84USD 580,160SEC 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 · —
Ticker(CALX)
CIK0001406666
SectorTechnology
IndustrySoftware—Infrastructure Yahoo Finance
SEC SIC4899 Communications Services, NEC
ExchangeNYSE

Data coverage

Local Form 4 history221 transaction lines from 2020-02-07 to 2026-07-27
15 P purchase lines · 91 S sale lines · 115 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.