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

NATIONAL HEALTHCARE CORP

NHC · NYSE · CIK 0001047335 · Healthcare · Medical Care Facilities

INSIDER SIGNAL

No active buy signal

1 qualifying P purchase group
in the current 180-day scoring window

40 Form 4 transaction lines observed in the same window
19 sales · 20 option, withholding, award, gift or other lines

Last qualifying purchase2026-06-01 · Piercey Lisa · $174.9K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying1 qualifying line group(s)
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
FLATT BEN ANDERSON SRSenior VP & CIO
○○▼▼▼▼▼▼▼
KIDD BRIAN FSVP, CFO
○○○▼
Gifford David R.Director
○○○▼
Flatt Stephen FowlerCEO
○○○▼
HASSAN EMIL EDirector
▼▼
ADAMS ROBERT GDirector
○○
● Purchase▼ Sale○ Other

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

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Piercey Lisa · $174.9K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-06-01–2026-06-01

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

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: 2026-06-01 · Piercey Lisa.

Recent Form 4 activity

1Purchases
23Sales
84Other Form 4 lines
62SEC filings · 365 days
BUYING1 qualifying P line(s) · 180 days
SELLING19 sale line(s) · context only
OTHER20 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
817,160
Previous report
683,175
Avg daily volume
132,770
Days to cover
6.2

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
2026-06-01Piercey LisaPurchase (P)Common Stock949USD 184.26USD 174,863SEC filing ↗
2023-09-06ADAMS ROBERT GPurchase (P)Shares of Common Stock - Trust I2,000USD 66.96USD 133,920SEC filing ↗
2023-09-06ADAMS ROBERT GPurchase (P)Shares of Common Stock - Trust I2,000USD 65.40USD 130,800SEC filing ↗
2023-08-09ADAMS W ANDREWPurchase (P)Shares of Common Stock - my name or my spouse's name1,861USD 67.17USD 125,003SEC filing ↗
2023-06-29LAROCHE RICHARD F JRPurchase (P)Common Stock (held in my name or my wife's name)2,100USD 61.40USD 128,940SEC filing ↗
2023-05-15BURGESS ERNEST G IIIPurchase (P)Shares of Common Stock held in BTCP Trust2,300USD 58.85USD 135,355SEC filing ↗
2023-02-23ABERNATHY JAMES PAULPurchase (P)Shares of Common Stock2,176USD 57.45USD 125,011SEC filing ↗
2020-09-22LAROCHE RICHARD F JRPurchase (P)Common Stock - Family LP (BFLP)477USD 60.93USD 29,064SEC filing ↗

Form 4 evidence

108 transaction lines in the latest 365-day window; 379 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-22Dodson Vicki LSale (S)Shares of Common Stock held in my name4,834USD 225.00USD 1,087,650SEC filing ↗
2026-09-11KIDD BRIAN FSale (S)Common Stock6,813USD 225.70USD 1,537,694SEC filing ↗
2026-09-10McCreary Josh ASale (S)Common Stock2,719USD 224.23USD 609,673SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-22Dodson Vicki LSale (S)Shares of Common Stock held in my name4,834USD 225.00USD 1,087,650SEC filing ↗
2026-09-11KIDD BRIAN FSale (S)Common Stock6,813USD 225.70USD 1,537,694SEC filing ↗
2026-09-10McCreary Josh ASale (S)Common Stock2,719USD 224.23USD 609,673SEC filing ↗
2026-08-28FLATT BEN ANDERSON SRSale (S)Common Stock1,000USD 222.50USD 222,500SEC filing ↗
2026-08-25FLATT BEN ANDERSON SRSale (S)Common Stock1,000USD 227.00USD 227,000SEC filing ↗
2026-08-25Gifford David R.Sale (S)Common Stock1,779USD 225.42USD 401,022SEC filing ↗
2026-08-20FLATT BEN ANDERSON SRSale (S)Common Stock1,000USD 237.00USD 237,000SEC filing ↗
2026-08-20Gifford David R.Option exercise / conversion (M)Common Stock6,479USD 171.42USD 1,110,630SEC filing ↗
2026-08-20Gifford David R.Award / grant (A)Common Stock4,691USD 236.75USD 1,110,594SEC filing ↗
2026-08-19FLATT BEN ANDERSON SRSale (S)Common Stock1,000USD 237.18USD 237,180SEC filing ↗
2026-08-19Flatt Stephen FowlerSale (S)Common Stock1,500USD 237.08USD 355,620SEC filing ↗
2026-08-17FLATT BEN ANDERSON SRSale (S)Common Stock1,000USD 226.00USD 226,000SEC filing ↗
2026-08-14FLATT BEN ANDERSON SRSale (S)Common Stock1,000USD 222.11USD 222,110SEC filing ↗
2026-08-13Gifford David R.Option exercise / conversion (M)Common Stock1,021USD 171.42USD 175,020SEC filing ↗
2026-08-12FLATT BEN ANDERSON SRSale (S)Common Stock1,000USD 221.21USD 221,210SEC filing ↗
2026-06-22HASSAN EMIL ESale (S)Shares of Common Stock5,937USD 200.00USD 1,187,400SEC filing ↗
2026-06-16KIDD BRIAN FGift (G)Common Stock500USD 0.00USD 0SEC filing ↗
2026-06-16HASSAN EMIL ESale (S)Shares of Common Stock1,563USD 199.98USD 312,569SEC filing ↗
2026-06-08ADAMS ROBERT GOption exercise / conversion (M)Shares of Common Stock - Trust I4,000USD 69.19USD 276,760SEC filing ↗
2026-06-08ADAMS ROBERT GGift (G)Shares of Common Stock - Trust I4,000USD 0.00USD 0SEC filing ↗
2026-06-01Piercey LisaPurchase (P)Common Stock949USD 184.26USD 174,863SEC filing ↗
2026-05-22FLATT BEN ANDERSON SROption exercise / conversion (M)Common Stock4,000USD 94.10USD 376,400SEC filing ↗
2026-05-22FLATT BEN ANDERSON SRTax withholding (F)Common Stock2,739USD 196.00USD 536,844SEC filing ↗
2026-05-21LAROCHE RICHARD F JRSale (S)Common Stock - Held in my name or my wife's name7,500USD 195.14USD 1,463,550SEC filing ↗
2026-05-20Flatt Stephen FowlerGift (G)Common Stock26USD 0.00USD 0SEC filing ↗
2026-05-19Shelly Timothy J.Sale (S)Common Stock1,853USD 197.22USD 365,449SEC filing ↗
2026-05-14KIDD BRIAN FOption exercise / conversion (M)Common Stock4,500USD 93.71USD 421,710SEC filing ↗
2026-05-14KIDD BRIAN FTax withholding (F)Common Stock3,134USD 197.96USD 620,407SEC filing ↗
2026-05-14Flatt Stephen FowlerOption exercise / conversion (M)Common Stock6,000USD 93.52USD 561,120SEC filing ↗
2026-05-14Flatt Stephen FowlerTax withholding (F)Common Stock4,492USD 197.96USD 889,236SEC 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 · —
TickerNHC
CIK0001047335
SectorHealthcare
IndustryMedical Care Facilities Yahoo Finance
SEC SIC8051 Services-Skilled Nursing Care Facilities
ExchangeNYSE

Data coverage

Local Form 4 history379 transaction lines from 2020-01-02 to 2026-09-22
8 P purchase lines · 46 S sale lines · 325 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.