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

SBA COMMUNICATIONS CORP

SBAC · Nasdaq · CIK 0001034054 · Real Estate · REIT—Specialty

INSIDER SIGNAL

No active buy signal

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

42 Form 4 transaction lines observed in the same window
1 sales · 41 option, withholding, award, gift or other lines

Last qualifying purchase2021-11-17 · Cavanagh Brendan Thomas · $1.4K

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
Krouse George R JrDirector
○○○○▼
LANGER JACKDirector
○○○○
BERNSTEIN STEVEN EDirector
○○○
BEEBE KEVIN LDirector
○○○
Johnson Jay LeCoryelleDirector
○○
Chan Mary SDirector
○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 4 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: 2021-11-17 · Cavanagh Brendan Thomas.

Recent Form 4 activity

0Purchases
1Sales
116Other Form 4 lines
33SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING1 sale line(s) · context only
OTHER41 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
3,314,948
Previous report
3,794,704
Avg daily volume
988,892
Days to cover
3.4

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
2021-11-17Cavanagh Brendan ThomasPurchase (P)Class A Common Stock4USD 350.37USD 1,401SEC filing ↗
2020-06-11Cavanagh Brendan ThomasPurchase (P)Class A Common Stock3USD 294.04USD 882SEC filing ↗

Form 4 evidence

117 transaction lines in the latest 365-day window; 933 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-17Krouse George R JrSale (S)Class A Common Stock300USD 182.67USD 54,801SEC filing ↗
2026-08-01DAY DONALDOption exercise / conversion (M)Class A Common Stock457USD 0.00USD 0SEC filing ↗
2026-08-01DAY DONALDTax withholding (F)Class A Common Stock171USD 180.98USD 30,891SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-17Krouse George R JrSale (S)Class A Common Stock300USD 182.67USD 54,801SEC filing ↗
2026-08-01DAY DONALDOption exercise / conversion (M)Class A Common Stock457USD 0.00USD 0SEC filing ↗
2026-08-01DAY DONALDTax withholding (F)Class A Common Stock171USD 180.98USD 30,891SEC filing ↗
2026-05-13LANGER JACKOption exercise / conversion (M)Class A Common Stock1,501USD 212.31USD 318,677SEC filing ↗
2026-05-13LANGER JACKTax withholding (F)Class A Common Stock1,496USD 213.61USD 319,561SEC filing ↗
2026-05-13Krouse George R JrOption exercise / conversion (M)Class A Common Stock501USD 212.31USD 106,367SEC filing ↗
2026-05-13Krouse George R JrTax withholding (F)Class A Common Stock500USD 213.61USD 106,805SEC filing ↗
2026-05-13BERNSTEIN STEVEN EOption exercise / conversion (M)Class A Common Stock1,501USD 212.31USD 318,677SEC filing ↗
2026-05-13BERNSTEIN STEVEN ETax withholding (F)Class A Common Stock1,496USD 213.61USD 319,561SEC filing ↗
2026-05-13BEEBE KEVIN LOption exercise / conversion (M)Class A Common Stock1,501USD 212.31USD 318,677SEC filing ↗
2026-05-13BEEBE KEVIN LTax withholding (F)Class A Common Stock1,492USD 213.61USD 318,706SEC filing ↗
2026-05-01Wilson Amy EOption exercise / conversion (M)Class A Common Stock881USD —USD —SEC filing ↗
2026-05-01STOOPS JEFFREYOption exercise / conversion (M)Class A Common Stock633USD —USD —SEC filing ↗
2026-05-01LANGER JACKOption exercise / conversion (M)Class A Common Stock881USD —USD —SEC filing ↗
2026-05-01LANGER JACKTax withholding (F)Class A Common Stock326USD 221.20USD 72,105SEC filing ↗
2026-05-01Krouse George R JrOption exercise / conversion (M)Class A Common Stock881USD —USD —SEC filing ↗
2026-05-01Krouse George R JrTax withholding (F)Class A Common Stock326USD 221.20USD 72,105SEC filing ↗
2026-05-01Johnson Jay LeCoryelleOption exercise / conversion (M)Class A Common Stock881USD —USD —SEC filing ↗
2026-05-01Johnson Jay LeCoryelleTax withholding (F)Class A Common Stock326USD 221.20USD 72,105SEC filing ↗
2026-05-01Chan Mary SOption exercise / conversion (M)Class A Common Stock881USD —USD —SEC filing ↗
2026-05-01Chan Mary STax withholding (F)Class A Common Stock326USD 221.20USD 72,105SEC filing ↗
2026-05-01BOWEN LAURIEOption exercise / conversion (M)Class A Common Stock881USD —USD —SEC filing ↗
2026-05-01BOWEN LAURIETax withholding (F)Class A Common Stock326USD 221.20USD 72,105SEC filing ↗
2026-05-01BERNSTEIN STEVEN EOption exercise / conversion (M)Class A Common Stock881USD —USD —SEC filing ↗
2026-05-01BEEBE KEVIN LOption exercise / conversion (M)Class A Common Stock881USD —USD —SEC filing ↗
2026-04-13Chan Mary SOption exercise / conversion (M)Class A Common Stock1,501USD 212.31USD 318,677SEC filing ↗
2026-04-13Chan Mary STax withholding (F)Class A Common Stock1,453USD 223.75USD 325,109SEC filing ↗
2026-03-06STOOPS JEFFREYOption exercise / conversion (M)Class A Common Stock24,276USD 0.00USD 0SEC filing ↗
2026-03-06STOOPS JEFFREYTax withholding (F)Class A Common Stock9,471USD 195.69USD 1,853,402SEC filing ↗
2026-03-06Montagner MarcOption exercise / conversion (M)Class A Common Stock4,523USD 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 · —
TickerSBAC
CIK0001034054
SectorReal Estate
IndustryREIT—Specialty Yahoo Finance
SEC SIC6798 Real Estate Investment Trusts
ExchangeNasdaq

Data coverage

Local Form 4 history933 transaction lines from 2020-01-13 to 2026-08-17
2 P purchase lines · 158 S sale lines · 773 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.