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

Alto Ingredients, Inc.

ALTO · Nasdaq · CIK 0000778164 · Basic Materials · Specialty Chemicals

INSIDER SIGNAL

55.9 / 100

1 buyers · 4 purchase transaction lines · $361.2K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeModerate
RoleStrong
RecencyModerate
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+7.0 / 35
Purchase size+13.2 / 25
Role+20.0 / 20
Recency+5.7 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 1 insider(s), not 4+
  • ✓ Role scores high · most senior buyer: Director

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
NATHAN GILBERT EDirector
●●○●●
Tank Alan RobertDirector
○
Nury Dianne S.Director
○
Gray Maria GDirector
○
Graham Auste MCLO & Secretary
○
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: NATHAN GILBERT E · $361.2K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-12–2026-05-13

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

55.9 / 100

Latest recorded score

↓ -0.2 ptsversus the previous recorded snapshot
  1. 56.5
  2. 56.4
  3. 56.3
  4. 56.1
  5. 55.9

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

4Purchases
0Sales
15Other Form 4 lines
18SEC filings · 365 days
BUYING4 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER5 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
-5.8%
3M
-36.5%
6M
-22.3%
12M
+230.1%

Volatility & liquidity

Volatility
86.4%
Beta
—
Avg daily value
USD 6.3M

Valuation

Market cap
USD 289.3M
P/E
21691.9×

Fundamentals

Profit margin
0.0%
ROE
0.0%
Industry
Specialty Chemicals

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, P/E, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-06 · Status: PASS

Short interest

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

Shares short
5,943,360
Previous report
6,516,329
Avg daily volume
1,180,573
Days to cover
5.0

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
2026-09-14NATHAN GILBERT EPurchase (P)Common Stock10,000USD 3.93USD 39,300SEC filing ↗
2026-08-11NATHAN GILBERT EPurchase (P)Common Stock50,000USD 4.15USD 207,500SEC filing ↗
2026-05-13NATHAN GILBERT EPurchase (P)Common Stock5,000USD 4.45USD 22,250SEC filing ↗
2026-05-12NATHAN GILBERT EPurchase (P)Common Stock20,000USD 4.61USD 92,200SEC filing ↗
2025-08-13Sneed James RPurchase (P)Common Stock3,176USD 1.06USD 3,367SEC filing ↗
2024-11-13NATHAN GILBERT EPurchase (P)Common Stock30,000USD 1.34USD 40,150SEC filing ↗
2024-11-12Olander Robert R.Purchase (P)Common Stock7,350USD 1.36USD 9,996SEC filing ↗
2024-11-12McGregor Bryon TPurchase (P)Common Stock37,000USD 1.36USD 50,320SEC filing ↗
2023-06-01NATHAN GILBERT EPurchase (P)Common Stock5,000USD 1.97USD 9,850SEC filing ↗
2023-05-31NATHAN GILBERT EPurchase (P)Common Stock5,000USD 1.99USD 9,950SEC filing ↗
2023-03-17NATHAN GILBERT EPurchase (P)Common Stock10,000USD 1.71USD 17,100SEC filing ↗
2023-03-16NATHAN GILBERT EPurchase (P)Common Stock10,000USD 1.81USD 18,100SEC filing ↗
2023-03-16Graham Auste MPurchase (P)Common Stock2,700USD 1.85USD 4,995SEC filing ↗
2023-03-15NATHAN GILBERT EPurchase (P)Common Stock15,000USD 1.86USD 27,900SEC filing ↗
2023-03-14Graham Auste MPurchase (P)Common Stock2,526USD 1.98USD 5,001SEC filing ↗

Form 4 evidence

19 transaction lines in the latest 365-day window; 181 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-14NATHAN GILBERT EPurchase (P)Common Stock10,000USD 3.93USD 39,300SEC filing ↗
2026-08-11NATHAN GILBERT EPurchase (P)Common Stock50,000USD 4.15USD 207,500SEC filing ↗
2026-06-23Tank Alan RobertAward / grant (A)Common Stock23,605USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (19 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-14NATHAN GILBERT EPurchase (P)Common Stock10,000USD 3.93USD 39,300SEC filing ↗
2026-08-11NATHAN GILBERT EPurchase (P)Common Stock50,000USD 4.15USD 207,500SEC filing ↗
2026-06-23Tank Alan RobertAward / grant (A)Common Stock23,605USD 0.00USD 0SEC filing ↗
2026-06-23Nury Dianne S.Award / grant (A)Common Stock23,605USD 0.00USD 0SEC filing ↗
2026-06-23NATHAN GILBERT EAward / grant (A)Common Stock31,652USD 0.00USD 0SEC filing ↗
2026-06-23Gray Maria GAward / grant (A)Common Stock23,605USD 0.00USD 0SEC filing ↗
2026-05-14Graham Auste MGift (G)Common Stock20,000USD 0.00USD 0SEC filing ↗
2026-05-13NATHAN GILBERT EPurchase (P)Common Stock5,000USD 4.45USD 22,250SEC filing ↗
2026-05-12NATHAN GILBERT EPurchase (P)Common Stock20,000USD 4.61USD 92,200SEC filing ↗
2026-04-01Sneed James RTax withholding (F)Common Stock22,265USD 4.79USD 106,649SEC filing ↗
2026-04-01Olander Robert R.Tax withholding (F)Common Stock41,072USD 4.79USD 196,735SEC filing ↗
2026-04-01McGregor Bryon TTax withholding (F)Common Stock73,062USD 4.79USD 349,967SEC filing ↗
2026-04-01Graham Auste MTax withholding (F)Common Stock32,902USD 4.79USD 157,601SEC filing ↗
2026-04-01Benton Todd ETax withholding (F)Common Stock25,359USD 4.79USD 121,470SEC filing ↗
2026-03-17Sneed James RAward / grant (A)Common Stock30,794USD 0.00USD 0SEC filing ↗
2026-03-17Olander Robert R.Award / grant (A)Common Stock35,730USD 0.00USD 0SEC filing ↗
2026-03-17McGregor Bryon TAward / grant (A)Common Stock100,108USD 0.00USD 0SEC filing ↗
2026-03-17Graham Auste MAward / grant (A)Common Stock30,794USD 0.00USD 0SEC filing ↗
2026-03-17Benton Todd EAward / grant (A)Common Stock35,730USD 0.00USD 0SEC 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 · —
TickerALTO
CIK0000778164
SectorBasic Materials
IndustrySpecialty Chemicals Yahoo Finance
SEC SIC2860 Industrial Organic Chemicals
ExchangeNasdaq

Data coverage

Local Form 4 history181 transaction lines from 2020-03-10 to 2026-09-14
70 P purchase lines · 6 S sale lines · 105 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.