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

ONE STOP SYSTEMS, INC.

OSS · Nasdaq · CIK 0001394056 · Technology · Computer Hardware

INSIDER SIGNAL

No active buy signal

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

12 Form 4 transaction lines observed in the same window
3 sales · 9 option, withholding, award, gift or other lines

Last qualifying purchase2024-08-14 · Manko Joseph M. Jr. · $49.8K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
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
KNOWLES MICHAELChief Executive Officer
○○○
BASSETT DAVID GEORGEDirector
○▼
Matz Gregory WDirector
○▼
Herbets Mitchell HDirector
○▼
Gabel Daniel G.Chief Financial Officer
○○
Dumont Michael J.Director
○
● Purchase▼ Sale○ Other

—

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: 2024-08-14 · Manko Joseph M. Jr..

Recent Form 4 activity

0Purchases
3Sales
21Other Form 4 lines
15SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING3 sale line(s) · context only
OTHER9 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
4,481,515
Previous report
4,702,047
Avg daily volume
643,188
Days to cover
7.0

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
2024-08-14Manko Joseph M. Jr.Purchase (P)Common Stock25,000USD 1.99USD 49,750SEC filing ↗
2024-08-13Manko Joseph M. Jr.Purchase (P)Common Stock50,000USD 1.94USD 97,000SEC filing ↗
2023-10-13Dumont Michael J.Purchase (P)Common Stock4USD 2.05USD 8SEC filing ↗
2023-08-16KNOWLES MICHAELPurchase (P)Common Stock1,130USD 1.80USD 2,034SEC filing ↗
2023-08-15Matz Gregory WPurchase (P)Common Stock2,500USD 1.77USD 4,425SEC filing ↗
2023-08-14RAUN DAVIDPurchase (P)Common Stock5,000USD 1.97USD 9,850SEC filing ↗
2021-11-22RAUN DAVIDPurchase (P)Common Stocik2,000USD 5.00USD 10,000SEC filing ↗
2021-08-18RAUN DAVIDPurchase (P)Common Stock2,000USD 5.45USD 10,900SEC filing ↗
2021-06-29Messinger GioiaPurchase (P)Common Stock1,000USD 5.66USD 5,660SEC filing ↗
2021-03-31RAUN DAVIDPurchase (P)Common Stock2,000USD 6.07USD 12,140SEC filing ↗
2021-03-30Lowman Teresita M.Purchase (P)Common Stock2,000USD 5.91USD 11,820SEC filing ↗
2020-11-24Messinger GioiaPurchase (P)Common Stock760USD 2.50USD 1,900SEC filing ↗
2020-11-18RAUN DAVIDPurchase (P)Common Stock5,000USD 2.23USD 11,150SEC filing ↗
2020-08-18RAUN DAVIDPurchase (P)Common Stock5,000USD 2.29USD 11,450SEC filing ↗
2020-08-14Harrison JackPurchase (P)Common Stock5,000USD 2.27USD 11,350SEC filing ↗

Form 4 evidence

24 transaction lines in the latest 365-day window; 293 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-15KNOWLES MICHAELTax withholding (F)Common Stock8,621USD 13.61USD 117,332SEC filing ↗
2026-08-07KNOWLES MICHAELTax withholding (F)Common Stock8,621USD 13.32USD 114,832SEC filing ↗
2026-08-07Gabel Daniel G.Tax withholding (F)Common Stock3,832USD 13.32USD 51,042SEC filing ↗
Show recent Form 4 evidence (24 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-15KNOWLES MICHAELTax withholding (F)Common Stock8,621USD 13.61USD 117,332SEC filing ↗
2026-08-07KNOWLES MICHAELTax withholding (F)Common Stock8,621USD 13.32USD 114,832SEC filing ↗
2026-08-07Gabel Daniel G.Tax withholding (F)Common Stock3,832USD 13.32USD 51,042SEC filing ↗
2026-06-05KNOWLES MICHAELTax withholding (F)Common Stock19,675USD 16.89USD 332,311SEC filing ↗
2026-05-26Matz Gregory WSale (S)Common Stock8,000USD 17.52USD 140,160SEC filing ↗
2026-05-26Herbets Mitchell HSale (S)Common Stock5,000USD 17.62USD 88,100SEC filing ↗
2026-05-26BASSETT DAVID GEORGESale (S)Common Stock8,000USD 17.64USD 141,120SEC filing ↗
2026-05-20Matz Gregory WAward / grant (A)Common Stock11,984USD 0.00USD 0SEC filing ↗
2026-05-20Herbets Mitchell HAward / grant (A)Common Stock11,984USD 0.00USD 0SEC filing ↗
2026-05-20Dumont Michael J.Award / grant (A)Common Stock11,984USD 0.00USD 0SEC filing ↗
2026-05-20BASSETT DAVID GEORGEAward / grant (A)Common Stock11,984USD 0.00USD 0SEC filing ↗
2026-05-11Gabel Daniel G.Tax withholding (F)Common Stock1,613USD 15.68USD 25,292SEC filing ↗
2026-02-15KNOWLES MICHAELTax withholding (F)Common Stock6,650USD 8.70USD 57,855SEC filing ↗
2026-02-15Ison JamesGift (G)Common Stock4,263USD 0.00USD 0SEC filing ↗
2026-02-15Ison JamesTax withholding (F)Common Stock3,120USD 8.70USD 27,144SEC filing ↗
2026-02-07KNOWLES MICHAELTax withholding (F)Common Stock13,298USD 9.24USD 122,874SEC filing ↗
2026-02-07Ison JamesGift (G)Common Stock8,213USD 0.00USD 0SEC filing ↗
2026-02-07Ison JamesTax withholding (F)Common Stock6,546USD 9.24USD 60,485SEC filing ↗
2026-02-07Ison JamesAward / grant (A)Common Stock34,313USD 0.00USD 0SEC filing ↗
2026-02-07Gabel Daniel G.Tax withholding (F)Common Stock7,799USD 9.24USD 72,063SEC filing ↗
2026-02-07KNOWLES MICHAELAward / grant (A)Common Stock101,862USD 0.00USD 0SEC filing ↗
2026-02-07Gabel Daniel G.Award / grant (A)Common Stock55,239USD 0.00USD 0SEC filing ↗
2025-12-31Gabel Daniel G.Tax withholding (F)Common Stock3,215USD 7.18USD 23,084SEC filing ↗
2025-12-31KNOWLES MICHAELTax withholding (F)Common Stock19,075USD 7.18USD 136,958SEC 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 · —
TickerOSS
CIK0001394056
SectorTechnology
IndustryComputer Hardware Yahoo Finance
SEC SIC3571 Electronic Computers
ExchangeNasdaq

Data coverage

Local Form 4 history293 transaction lines from 2020-02-12 to 2026-08-15
20 P purchase lines · 48 S sale lines · 225 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.