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

Nextdoor Holdings, Inc.

NXDR · NYSE · CIK 0001846069 · Communication Services · Internet Content & Information

INSIDER SIGNAL

No active buy signal

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

66 Form 4 transaction lines observed in the same window
12 sales · 54 option, withholding, award, gift or other lines

Last qualifying purchase2025-03-03 · Hohman Robert · $499.0K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
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
How AntoinetteChief Accounting Officer
○○▼▼○▼○▼○▼
Schwartz SophiaChief Legal Officer, Secretary
▼○○▼▼
Kiernan MichaelChief Revenue Officer
○○▼▼
Lisowski CraigPresident of Products
▼○○▼
Steele ElisaDirector
○○○○
Shah NirajDirector
○○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 8 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: 2025-03-03 · Hohman Robert.

Recent Form 4 activity

0Purchases
22Sales
120Other Form 4 lines
53SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING12 sale line(s) · context only
OTHER54 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
6,402,219
Previous report
6,545,245
Avg daily volume
2,634,782
Days to cover
2.4

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
2025-03-03Hohman RobertPurchase (P)Class A Common Stock300,000USD 1.66USD 499,000SEC filing ↗
2022-08-19Sze David LPurchase (P)Class A Common Stock765,000USD 3.31USD 2,532,150SEC filing ↗
2022-08-19GREYLOCK 16 LIMITED PARTNERSHIP; GREYLOCK 16 PRINCIPALS LP; GREYLOCK 16-A LIMITED PARTNERSHIP; Greylock 16 GP LLCPurchase (P)Class A Common Stock765,000USD 3.31USD 2,532,150SEC filing ↗
2022-08-18Sze David LPurchase (P)Class A Common Stock400,000USD 3.39USD 1,356,000SEC filing ↗
2022-08-18GREYLOCK 16 LIMITED PARTNERSHIP; GREYLOCK 16 PRINCIPALS LP; GREYLOCK 16-A LIMITED PARTNERSHIP; Greylock 16 GP LLCPurchase (P)Class A Common Stock400,000USD 3.39USD 1,356,000SEC filing ↗
2022-08-17Sze David LPurchase (P)Class A Common Stock500,000USD 3.32USD 1,660,000SEC filing ↗
2022-08-17GREYLOCK 16 LIMITED PARTNERSHIP; GREYLOCK 16 PRINCIPALS LP; GREYLOCK 16-A LIMITED PARTNERSHIP; Greylock 16 GP LLCPurchase (P)Class A Common Stock500,000USD 3.32USD 1,660,000SEC filing ↗
2022-08-16Sze David LPurchase (P)Class A Common Stock528,500USD 3.39USD 1,791,615SEC filing ↗
2022-08-16GREYLOCK 16 LIMITED PARTNERSHIP; GREYLOCK 16 PRINCIPALS LP; GREYLOCK 16-A LIMITED PARTNERSHIP; Greylock 16 GP LLCPurchase (P)Class A Common Stock528,500USD 3.39USD 1,791,615SEC filing ↗
2022-08-15Sze David LPurchase (P)Class A Common Stock1,000,000USD 3.13USD 3,130,000SEC filing ↗
2022-08-15GREYLOCK 16 LIMITED PARTNERSHIP; GREYLOCK 16 PRINCIPALS LP; GREYLOCK 16-A LIMITED PARTNERSHIP; Greylock 16 GP LLCPurchase (P)Class A Common Stock1,000,000USD 3.13USD 3,130,000SEC filing ↗
2022-08-12Sze David LPurchase (P)Class A Common Stock1,600,000USD 3.06USD 4,896,000SEC filing ↗
2022-08-12GREYLOCK 16 LIMITED PARTNERSHIP; GREYLOCK 16 PRINCIPALS LP; GREYLOCK 16-A LIMITED PARTNERSHIP; Greylock 16 GP LLCPurchase (P)Class A Common Stock1,600,000USD 3.06USD 4,896,000SEC filing ↗
2022-08-11Sze David LPurchase (P)Class A Common Stock1,500,000USD 2.91USD 4,365,000SEC filing ↗
2022-08-11GREYLOCK 16 LIMITED PARTNERSHIP; GREYLOCK 16 PRINCIPALS LP; GREYLOCK 16-A LIMITED PARTNERSHIP; Greylock 16 GP LLCPurchase (P)Class A Common Stock1,500,000USD 2.91USD 4,365,000SEC filing ↗

Form 4 evidence

142 transaction lines in the latest 365-day window; 414 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-13How AntoinetteSale (S)Class A Common Stock10,800USD 2.72USD 29,379SEC filing ↗
2026-10-13How AntoinetteC (C)Class A Common Stock10,800USD 0.00USD 0SEC filing ↗
2026-09-30Sze David LOption exercise / conversion (M)Class A Common Stock6,536USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-13How AntoinetteSale (S)Class A Common Stock10,800USD 2.72USD 29,379SEC filing ↗
2026-10-13How AntoinetteC (C)Class A Common Stock10,800USD 0.00USD 0SEC filing ↗
2026-09-30Sze David LOption exercise / conversion (M)Class A Common Stock6,536USD 0.00USD 0SEC filing ↗
2026-09-30Steele ElisaOption exercise / conversion (M)Class A Common Stock6,536USD 0.00USD 0SEC filing ↗
2026-09-30Shah NirajOption exercise / conversion (M)Class A Common Stock6,536USD 0.00USD 0SEC filing ↗
2026-09-30Pressman JasonOption exercise / conversion (M)Class A Common Stock6,536USD 0.00USD 0SEC filing ↗
2026-09-30GURLEY J WILLIAMOption exercise / conversion (M)Class A Common Stock6,536USD 0.00USD 0SEC filing ↗
2026-09-22Kiernan MichaelSale (S)Class A Common Stock50,000USD 2.54USD 127,000SEC filing ↗
2026-09-21How AntoinetteSale (S)Class A Common Stock40,000USD 2.63USD 105,200SEC filing ↗
2026-09-21How AntoinetteC (C)Class A Common Stock40,000USD 0.00USD 0SEC filing ↗
2026-09-15How AntoinetteSale (S)Class A Common Stock154,893USD 2.43USD 376,390SEC filing ↗
2026-09-15How AntoinetteC (C)Class A Common Stock154,893USD 0.00USD 0SEC filing ↗
2026-09-02How AntoinetteSale (S)Class A Common Stock35,581USD 2.25USD 80,057SEC filing ↗
2026-08-21Kiernan MichaelSale (S)Class A Common Stock111,559USD 2.39USD 266,626SEC filing ↗
2026-08-17Schwartz SophiaSale (S)Class A Common Stock2,500USD 2.51USD 6,275SEC filing ↗
2026-07-16Lisowski CraigSale (S)Class A Common Stock30,000USD 2.51USD 75,300SEC filing ↗
2026-07-16Schwartz SophiaSale (S)Class A Common Stock52,582USD 2.49USD 130,929SEC filing ↗
2026-07-16How AntoinetteSale (S)Class A Common Stock9,424USD 2.48USD 23,372SEC filing ↗
2026-07-15Tolia Nirav NOption exercise / conversion (M)Class A Common Stock468,773USD 0.00USD 0SEC filing ↗
2026-07-15Tolia Nirav NTax withholding (F)Class A Common Stock184,464USD 2.52USD 464,849SEC filing ↗
2026-07-15Schwartz SophiaOption exercise / conversion (M)Class A Common Stock145,363USD 0.00USD 0SEC filing ↗
2026-07-15Schwartz SophiaTax withholding (F)Class A Common Stock63,641USD 2.52USD 160,375SEC filing ↗
2026-07-15Ponnambalam IndrajitOption exercise / conversion (M)Restricted Stock Units (RSU)103,249USD 0.00USD 0SEC filing ↗
2026-07-15Ponnambalam IndrajitTax withholding (F)Restricted Stock Units (RSU)33,402USD 2.52USD 84,173SEC filing ↗
2026-07-15Kiernan MichaelOption exercise / conversion (M)Class A Common Stock92,630USD 0.00USD 0SEC filing ↗
2026-07-15Kiernan MichaelTax withholding (F)Class A Common Stock40,110USD 2.52USD 101,077SEC filing ↗
2026-07-15How AntoinetteOption exercise / conversion (M)Class A Common Stock24,928USD 0.00USD 0SEC filing ↗
2026-07-15How AntoinetteTax withholding (F)Class A Common Stock8,938USD 2.52USD 22,524SEC filing ↗
2026-07-15Lisowski CraigOption exercise / conversion (M)Class A Common Stock292,692USD 0.00USD 0SEC filing ↗
2026-07-15Lisowski CraigTax withholding (F)Class A Common Stock148,630USD 2.52USD 374,548SEC 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 · —
TickerNXDR
CIK0001846069
SectorCommunication Services
IndustryInternet Content & Information Yahoo Finance
SEC SIC7370 Services-Computer Programming, Data Processing, Etc.
ExchangeNYSE

Data coverage

Local Form 4 history414 transaction lines from 2021-03-26 to 2026-10-13
62 P purchase lines · 49 S sale lines · 303 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.