Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

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US · SEC FORM 4

COHU INC

COHU · Nasdaq · CIK 0000021535 · Technology · Semiconductor Equipment & Materials

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2021-08-13 · Muller Luis A · $99.9K

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
BOHRSON CHRISTOPHERSr VP & Chief Customer Officer
▼▼▼▼▼▼▼
CAGGIA ANDREW MDirector
○○▼○
Muller Luis APresident & CEO
▼▼▼▼
Jones Jeffrey DSr. VP Finance & CFO
▼○○
BENDUSH WILLIAMDirector
▼○○
DONAHUE JAMES ADirector
○▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 5 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: 2021-08-13 · Muller Luis A.

Recent Form 4 activity

0Purchases
22Sales
39Other Form 4 lines
45SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING18 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
+46.5%
3M
-2.3%
6M
+120.6%
12M
—

Volatility & liquidity

Volatility
68.4%
Beta
1.59
Avg daily value
USD 71.2M

Valuation

Market cap
USD 3.2B
P/E
—

Fundamentals

Profit margin
-16.4%
ROE
-9.5%
Industry
Semiconductor Equipment & Materials

Market data

Price data up to: 2026-09-30 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-27 · From Yahoo Finance: Market cap · Status: PASS

Short interest

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

Shares short
8,973,976
Previous report
8,628,062
Avg daily volume
989,524
Days to cover
9.1

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
2021-08-13Muller Luis APurchase (P)Common Stock3,200USD 31.22USD 99,904SEC filing ↗
2021-08-12JORDEN YONPurchase (P)Common Stock3,000USD 30.89USD 92,670SEC filing ↗

Form 4 evidence

61 transaction lines in the latest 365-day window; 444 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-15BOHRSON CHRISTOPHERSale (S)Common Stock1,000USD 55.31USD 55,310SEC filing ↗
2026-10-02Muller Luis ASale (S)Common Stock21,662USD 73.00USD 1,581,326SEC filing ↗
2026-09-25Muller Luis ASale (S)Common Stock27,236USD 65.00USD 1,770,340SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-15BOHRSON CHRISTOPHERSale (S)Common Stock1,000USD 55.31USD 55,310SEC filing ↗
2026-10-02Muller Luis ASale (S)Common Stock21,662USD 73.00USD 1,581,326SEC filing ↗
2026-09-25Muller Luis ASale (S)Common Stock27,236USD 65.00USD 1,770,340SEC filing ↗
2026-09-25CAGGIA ANDREW MAward / grant (A)Restricted Stock Units326USD 0.00USD 0SEC filing ↗
2026-09-21Muller Luis ASale (S)Common Stock55,794USD 60.00USD 3,347,640SEC filing ↗
2026-08-19BOHRSON CHRISTOPHERSale (S)Common Stock10,000USD 55.82USD 558,200SEC filing ↗
2026-08-17BOHRSON CHRISTOPHERSale (S)Common Stock1,000USD 61.90USD 61,900SEC filing ↗
2026-08-05Richardson NinaSale (S)Common Stock3,055USD 51.54USD 157,455SEC filing ↗
2026-08-05CAGGIA ANDREW MSale (S)Common Stock15,252USD 51.74USD 789,086SEC filing ↗
2026-07-15Jones Jeffrey DJ (J)Restricted Stock Units190,590USD 0.00USD 0SEC filing ↗
2026-07-15Jones Jeffrey DJ (J)Common Stock (Indirect)190,590USD 0.00USD 0SEC filing ↗
2026-07-15BOHRSON CHRISTOPHERSale (S)Common Stock1,000USD 57.92USD 57,920SEC filing ↗
2026-06-26CAGGIA ANDREW MAward / grant (A)Restricted Stock Units294USD 0.00USD 0SEC filing ↗
2026-06-15BOHRSON CHRISTOPHERSale (S)Restricted Stock Units1,000USD 63.88USD 63,880SEC filing ↗
2026-05-22Muller Luis ASale (S)Common Stock45,154USD 46.62USD 2,105,079SEC filing ↗
2026-05-22Jones Jeffrey DSale (S)Common Stock13,000USD 46.84USD 608,920SEC filing ↗
2026-05-22DONAHUE JAMES ASale (S)Common Stock10,257USD 46.77USD 479,720SEC filing ↗
2026-05-20BILODEAU STEVEN JSale (S)Common Stock10,257USD 44.85USD 460,026SEC filing ↗
2026-05-15Richardson NinaAward / grant (A)Restricted Stock Units3,578USD 0.00USD 0SEC filing ↗
2026-05-15Rapp Karen MarieAward / grant (A)Restricted Stock Units3,578USD 0.00USD 0SEC filing ↗
2026-05-15Mattes Andreas WAward / grant (A)Restricted Stock Units3,578USD 0.00USD 0SEC filing ↗
2026-05-15JORDEN YONAward / grant (A)Restricted Stock Units3,578USD 0.00USD 0SEC filing ↗
2026-05-15DONAHUE JAMES AAward / grant (A)Restricted Stock Units3,578USD 0.00USD 0SEC filing ↗
2026-05-15CAGGIA ANDREW MAward / grant (A)Restricted Stock Units3,578USD 0.00USD 0SEC filing ↗
2026-05-15BILODEAU STEVEN JAward / grant (A)Restricted Stock Units3,578USD 0.00USD 0SEC filing ↗
2026-05-15BENDUSH WILLIAMJ (J)Common Stock (Indirect)10,257USD 0.00USD 0SEC filing ↗
2026-05-15BENDUSH WILLIAMAward / grant (A)Restricted Stock Units3,578USD 0.00USD 0SEC filing ↗
2026-05-15BOHRSON CHRISTOPHERSale (S)Common Stock1,000USD 46.92USD 46,920SEC filing ↗
2026-05-13BENDUSH WILLIAMSale (S)Common Stock (Indirect)7,500USD 49.14USD 368,550SEC filing ↗
2026-05-11BOHRSON CHRISTOPHERSale (S)Restricted Stock Units1,500USD 51.28USD 76,920SEC 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 · —
TickerCOHU
CIK0000021535
SectorTechnology
IndustrySemiconductor Equipment & Materials Yahoo Finance
SEC SIC3825 Instruments For Meas & Testing of Electricity & Elec Signals
ExchangeNasdaq

Data coverage

Local Form 4 history444 transaction lines from 2020-01-02 to 2026-10-15
2 P purchase lines · 121 S sale lines · 321 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.