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

DUCOMMUN INC /DE/

DCO · NYSE · CIK 0000030305 · Industrials · Aerospace & Defense

INSIDER SIGNAL

No active buy signal

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

52 Form 4 transaction lines observed in the same window
7 sales · 45 option, withholding, award, gift or other lines

Last qualifying purchase2020-03-20 · Wampler Christopher D. · $21.3K

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
Oswald Stephen GChairman, President & CEO
○○○○○○○○○○▼▼○○▼
Mookerji Suman B.Sr. V.P., C.F.O.
○○○○○○▼
Tata Rajiv A.V.P., G.C. & Corp. Secretary
○○▼
Redondo Jerry LS.V.P., Elec. & Struc. Systems
○○▼
Gonzalez Laureen S.V.P., CHRO
▼
Strycker Samara ADirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 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: 2020-03-20 · Wampler Christopher D..

Recent Form 4 activity

0Purchases
12Sales
76Other Form 4 lines
38SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING7 sale line(s) · context only
OTHER45 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
+2.0%
3M
-7.8%
6M
+36.1%
12M
—

Volatility & liquidity

Volatility
40.0%
Beta
—
Avg daily value
—

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
-4.5%
ROE
-5.6%
Industry
Aerospace & Defense

Market data

Price data up to: 2026-10-01 · 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
796,664
Previous report
855,544
Avg daily volume
261,572
Days to cover
3.0

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
2020-03-20Wampler Christopher D.Purchase (P)Common Stock1,000USD 21.27USD 21,270SEC filing ↗
2020-03-19PAULSON ROBERT DPurchase (P)Common Stock2,500USD 18.62USD 46,550SEC filing ↗
2020-03-17Oswald Stephen GPurchase (P)Common Stock15,000USD 21.10USD 316,500SEC filing ↗
2020-03-16FLATT DEAN MPurchase (P)Common Stock1,000USD 27.08USD 27,080SEC filing ↗
2020-03-11Oswald Stephen GPurchase (P)Common Stock15,000USD 33.93USD 508,950SEC filing ↗
2020-02-27Oswald Stephen GPurchase (P)Common Stock10,000USD 44.11USD 441,100SEC filing ↗
2020-02-26Oswald Stephen GPurchase (P)Common Stock10,000USD 44.50USD 445,000SEC filing ↗

Form 4 evidence

88 transaction lines in the latest 365-day window; 382 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-18Oswald Stephen GSale (S)Common Stock2,500USD 203.95USD 509,875SEC filing ↗
2026-08-17Oswald Stephen GOption exercise / conversion (M)Common Stock10,000USD 32.90USD 329,000SEC filing ↗
2026-08-17Oswald Stephen GTax withholding (F)Common Stock6,111USD 206.98USD 1,264,855SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-18Oswald Stephen GSale (S)Common Stock2,500USD 203.95USD 509,875SEC filing ↗
2026-08-17Oswald Stephen GOption exercise / conversion (M)Common Stock10,000USD 32.90USD 329,000SEC filing ↗
2026-08-17Oswald Stephen GTax withholding (F)Common Stock6,111USD 206.98USD 1,264,855SEC filing ↗
2026-08-12Oswald Stephen GSale (S)Common Stock5,766USD 201.15USD 1,159,831SEC filing ↗
2026-08-12Oswald Stephen GSale (S)Common Stock5,766USD 201.15USD 1,159,831SEC filing ↗
2026-08-12Oswald Stephen GGift (G)Common Stock3,400USD 0.00USD 0SEC filing ↗
2026-08-12Oswald Stephen GGift (G)Common Stock2,244USD 0.00USD 0SEC filing ↗
2026-08-11Oswald Stephen GOption exercise / conversion (M)Common Stock15,000USD 32.90USD 493,500SEC filing ↗
2026-08-11Oswald Stephen GOption exercise / conversion (M)Common Stock15,000USD 32.90USD 493,500SEC filing ↗
2026-08-11Oswald Stephen GTax withholding (F)Common Stock9,234USD 194.85USD 1,799,245SEC filing ↗
2026-08-11Oswald Stephen GTax withholding (F)Common Stock9,234USD 194.85USD 1,799,245SEC filing ↗
2026-06-11Oswald Stephen GGift (G)Common Stock1,920USD 0.00USD 0SEC filing ↗
2026-05-28Oswald Stephen GGift (G)Common Stock2,034USD 0.00USD 0SEC filing ↗
2026-05-28Gonzalez Laureen S.Sale (S)Common Stock589USD 151.99USD 89,522SEC filing ↗
2026-05-27Strycker Samara AAward / grant (A)Common Stock1,200USD 0.00USD 0SEC filing ↗
2026-05-27Kramer Sheila G.Award / grant (A)Common Stock1,200USD 0.00USD 0SEC filing ↗
2026-05-27Korte Daniel G.Award / grant (A)Common Stock1,200USD 0.00USD 0SEC filing ↗
2026-05-27Drazba ShirleyAward / grant (A)Common Stock1,200USD 0.00USD 0SEC filing ↗
2026-05-27Caylor Mark AAward / grant (A)Common Stock1,200USD 0.00USD 0SEC filing ↗
2026-05-27Carter David B.Award / grant (A)Common Stock1,200USD 0.00USD 0SEC filing ↗
2026-05-27BOEHLE DANIEL L.Award / grant (A)Common Stock1,200USD 0.00USD 0SEC filing ↗
2026-05-20Oswald Stephen GGift (G)Common Stock3,700USD 0.00USD 0SEC filing ↗
2026-05-20Oswald Stephen GD (D)Common Stock16,314USD 143.20USD 2,336,165SEC filing ↗
2026-05-20Mookerji Suman B.Sale (S)Common Stock1,514USD 145.00USD 219,530SEC filing ↗
2026-05-20Tata Rajiv A.Sale (S)Common Stock1,612USD 145.00USD 233,740SEC filing ↗
2026-05-15Mookerji Suman B.Option exercise / conversion (M)Common Stock7,500USD 40.44USD 303,300SEC filing ↗
2026-05-15Mookerji Suman B.Tax withholding (F)Common Stock4,783USD 151.59USD 725,055SEC filing ↗
2026-05-15Mookerji Suman B.Option exercise / conversion (M)Common Stock7,500USD 40.44USD 303,300SEC filing ↗
2026-05-15Mookerji Suman B.Tax withholding (F)Common Stock4,728USD 151.59USD 716,718SEC filing ↗
2026-05-14Mookerji Suman B.Tax withholding (F)Common Stock1,239USD 15,159.00USD 18,782,001SEC 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 · —
TickerDCO
CIK0000030305
SectorIndustrials
IndustryAerospace & Defense Yahoo Finance
SEC SIC3728 Aircraft Parts & Auxiliary Equipment, NEC
ExchangeNYSE

Data coverage

Local Form 4 history382 transaction lines from 2020-01-23 to 2026-08-18
7 P purchase lines · 38 S sale lines · 337 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.