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

Astera Labs, Inc.

ALAB · Nasdaq · CIK 0001736297 · Technology · Semiconductors

INSIDER SIGNAL

No active buy signal

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

361 Form 4 transaction lines observed in the same window
348 sales · 13 option, withholding, award, gift or other lines

Last qualifying purchase2024-03-22 · LAZAR JACK R · $360.0K

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
Dyckerhoff Stefan ADirector
▼○▼▼▼○▼
Gajendra SanjayPresident and COO
▼▼▼▼○▼
Mohan JitendraChief Executive Officer
▼▼▼▼▼
ALBA MANUELDirector
▼▼▼▼
Mazzara PhilipGeneral Counsel and Secretary
○▼▼▼
Mayer BethanyDirector
○▼
● 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: 2024-03-22 · LAZAR JACK R.

Recent Form 4 activity

0Purchases
499Sales
23Other Form 4 lines
63SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING348 sale line(s) · context only
OTHER13 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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+28.8%
3M
-18.4%
6M
+201.3%
12M
—

Volatility & liquidity

Volatility
98.9%
Beta
—
Avg daily value
—

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
25.7%
ROE
16.1%
Industry
Semiconductors

Market data

Price data up to: 2026-10-02 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-31 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
9,176,900
Previous report
8,685,910
Avg daily volume
4,126,264
Days to cover
2.2

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
2024-03-22LAZAR JACK RPurchase (P)Common Stock10,000USD 36.00USD 360,000SEC filing ↗
2024-03-22HURLSTON MICHAEL E.Purchase (P)Common Stock21,747USD 36.00USD 782,892SEC filing ↗
2024-03-22ALBA MANUELPurchase (P)Common Stock5,000USD 36.00USD 180,000SEC filing ↗

Form 4 evidence

522 transaction lines in the latest 365-day window; 1,018 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-07Dyckerhoff Stefan ASale (S)Common Stock12,499USD 376.06USD 4,700,374SEC filing ↗
2026-10-01HURLSTON MICHAEL E.Award / grant (A)Common Stock72USD 311.57USD 22,433SEC filing ↗
2026-10-01Dyckerhoff Stefan AAward / grant (A)Common Stock68USD 311.57USD 21,187SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-07Dyckerhoff Stefan ASale (S)Common Stock12,499USD 376.06USD 4,700,374SEC filing ↗
2026-10-01HURLSTON MICHAEL E.Award / grant (A)Common Stock72USD 311.57USD 22,433SEC filing ↗
2026-10-01Dyckerhoff Stefan AAward / grant (A)Common Stock68USD 311.57USD 21,187SEC filing ↗
2026-10-01BARRATT CRAIG HAward / grant (A)Common Stock68USD 311.57USD 21,187SEC filing ↗
2026-09-02Dyckerhoff Stefan ASale (S)Common Stock12,499USD 274.96USD 3,436,749SEC filing ↗
2026-09-01ALBA MANUELSale (S)Common Stock183,000USD 280.13USD 51,263,893SEC filing ↗
2026-08-17Mohan JitendraSale (S)Common Stock90,630USD 340.35USD 30,846,293SEC filing ↗
2026-08-17Mazzara PhilipSale (S)Common Stock6,801USD 340.50USD 2,315,754SEC filing ↗
2026-08-17Gajendra SanjaySale (S)Common Stock90,630USD 340.35USD 30,846,293SEC filing ↗
2026-08-06Dyckerhoff Stefan ASale (S)Common Stock12,499USD 311.83USD 3,897,557SEC filing ↗
2026-07-20Cota GermaineAward / grant (A)Common Stock1,451USD 0.00USD 0SEC filing ↗
2026-07-01ALBA MANUELSale (S)Common Stock8,491USD 458.38USD 3,892,090SEC filing ↗
2026-07-01ALBA MANUELSale (S)Common Stock37,535USD 447.39USD 16,792,721SEC filing ↗
2026-07-01ALBA MANUELSale (S)Common Stock136,974USD 442.01USD 60,543,420SEC filing ↗
2026-07-01Dyckerhoff Stefan ASale (S)Common Stock12,499USD 450.00USD 5,624,550SEC filing ↗
2026-06-24Mayer BethanySale (S)Common Stock686USD 395.04USD 270,999SEC filing ↗
2026-06-04Mayer BethanyAward / grant (A)Common Stock837USD 0.00USD 0SEC filing ↗
2026-06-04LAZAR JACK RSale (S)Common Stock10,000USD 355.17USD 3,551,698SEC filing ↗
2026-06-04LAZAR JACK RAward / grant (A)Common Stock837USD 0.00USD 0SEC filing ↗
2026-06-04HURLSTON MICHAEL E.Award / grant (A)Common Stock837USD 0.00USD 0SEC filing ↗
2026-06-04BARRATT CRAIG HAward / grant (A)Common Stock837USD 0.00USD 0SEC filing ↗
2026-06-04Dyckerhoff Stefan AAward / grant (A)Common Stock837USD 0.00USD 0SEC filing ↗
2026-06-03Dyckerhoff Stefan ASale (S)Common Stock12,499USD 364.35USD 4,554,044SEC filing ↗
2026-05-22Gajendra SanjayGift (G)Common Stock226,189USD 0.00USD 0SEC filing ↗
2026-05-21Mazzara PhilipSale (S)Common Stock796USD 291.03USD 231,660SEC filing ↗
2026-05-21Gajendra SanjaySale (S)Common Stock400,000USD 290.30USD 116,120,929SEC filing ↗
2026-05-19Gajendra SanjaySale (S)Common Stock280,000USD 249.19USD 69,774,006SEC filing ↗
2026-05-19Mohan JitendraSale (S)Common Stock28,737USD 249.62USD 7,173,355SEC filing ↗
2026-05-18Mohan JitendraSale (S)Common Stock95,444USD 225.02USD 21,476,902SEC filing ↗
2026-05-18Mohan JitendraSale (S)Common Stock111,214USD 216.89USD 24,121,606SEC 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 · —
TickerALAB
CIK0001736297
SectorTechnology
IndustrySemiconductors Yahoo Finance
SEC SIC3674 Semiconductors & Related Devices
ExchangeNasdaq

Data coverage

Local Form 4 history1,018 transaction lines from 2024-01-24 to 2026-10-07
3 P purchase lines · 930 S sale lines · 85 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.