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

Liquidia Corp

LQDA · Nasdaq · CIK 0001819576 · Healthcare · Drug Manufacturers—Specialty & Generic

INSIDER SIGNAL

No active buy signal

1 qualifying P purchase group
in the current 180-day scoring window

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

Last qualifying purchase2026-05-19 · Caligan Partners LP; JOHNSON DAVID EDWARD · $317.9K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying1 qualifying line group(s)
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
Adair JasonChief Business Officer
▼▼○▼○▼
Saggar RajeevChief Medical Officer
▼▼○▼○▼
Bloch Stephen MDirector
▼▼▼▼▼▼
SINGH RAMANDirector
○▼○▼
Krepp SarahChief Human Resource Officer
▼▼○▼
Rielly-Gauvin KatherineDirector
○▼○▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Caligan Partners LP; JOHNSON DAVID EDWARD · $317.9K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-19–2026-05-19

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

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: 2026-05-19 · Caligan Partners LP; JOHNSON DAVID EDWARD.

Recent Form 4 activity

1Purchases
175Sales
115Other Form 4 lines
115SEC filings · 365 days
BUYING1 qualifying P line(s) · 180 days
SELLING115 sale line(s) · context only
OTHER52 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
12,640,721
Previous report
12,377,976
Avg daily volume
3,291,757
Days to cover
3.8

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
2026-05-19Caligan Partners LP; JOHNSON DAVID EDWARDPurchase (P)Common Stock5,300USD 59.98USD 317,894SEC filing ↗
2024-09-12Manning Paul BPurchase (P)Common Stock337,078USD 8.90USD 2,999,994SEC filing ↗
2024-08-30Caligan Partners LP; JOHNSON DAVID EDWARDPurchase (P)Common Stock150,000USD 9.51USD 1,426,500SEC filing ↗
2023-12-14Manning Paul BPurchase (P)Common Stock279,330USD 7.16USD 2,000,003SEC filing ↗
2023-12-14JEFFS ROGERPurchase (P)Common Stock139,665USD 7.16USD 1,000,001SEC filing ↗
2023-12-14Caligan Partners LP; JOHNSON DAVID EDWARDPurchase (P)Common Stock, $0.001 par value per share ("Common Stock")1,117,318USD 7.16USD 7,999,997SEC filing ↗
2022-09-13Kaseta MichaelPurchase (P)Common Stock8,000USD 5.99USD 47,920SEC filing ↗
2022-09-06JEFFS ROGERPurchase (P)Common Stock43,820USD 5.57USD 244,077SEC filing ↗
2022-09-06Caligan Partners LP; JOHNSON DAVID EDWARDPurchase (P)Common Stock, $0.001 par value per share ("Common Stock")250,000USD 5.62USD 1,405,000SEC filing ↗
2022-08-31Kaseta MichaelPurchase (P)Common Stock1,927USD 4.90USD 9,442SEC filing ↗
2022-08-31JEFFS ROGERPurchase (P)Common Stock993USD 4.90USD 4,866SEC filing ↗
2022-08-31—Purchase (P)Common Stock2,160USD 4.90USD 10,584SEC filing ↗
2022-08-31—Purchase (P)Common Stock1,918USD 4.90USD 9,398SEC filing ↗
2022-05-31Kaseta MichaelPurchase (P)Common Stock18,700USD 4.01USD 74,936SEC filing ↗
2022-05-25Caligan Partners LP; JOHNSON DAVID EDWARDPurchase (P)Common Stock, $0.001 par value per share ("Common Stock")79,400USD 3.40USD 269,960SEC filing ↗

Form 4 evidence

291 transaction lines in the latest 365-day window; 624 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Schundler RussellSale (S)Common Stock13,692USD 28.48USD 389,948SEC filing ↗
2026-10-12Saggar RajeevSale (S)Common Stock9,218USD 28.48USD 262,529SEC filing ↗
2026-10-12Moomaw ScottSale (S)Common Stock8,863USD 28.48USD 252,418SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Schundler RussellSale (S)Common Stock13,692USD 28.48USD 389,948SEC filing ↗
2026-10-12Saggar RajeevSale (S)Common Stock9,218USD 28.48USD 262,529SEC filing ↗
2026-10-12Moomaw ScottSale (S)Common Stock8,863USD 28.48USD 252,418SEC filing ↗
2026-10-12Krepp SarahSale (S)Common Stock5,245USD 28.48USD 149,378SEC filing ↗
2026-10-12Khindri SanjeevSale (S)Common Stock1,101USD 28.48USD 31,356SEC filing ↗
2026-10-12Kaseta MichaelSale (S)Common Stock18,938USD 28.48USD 539,354SEC filing ↗
2026-10-12JEFFS ROGERSale (S)Common Stock32,744USD 28.48USD 932,549SEC filing ↗
2026-10-12Boyle DanaSale (S)Common Stock5,892USD 28.48USD 167,804SEC filing ↗
2026-10-12Adair JasonSale (S)Common Stock7,301USD 28.48USD 207,932SEC filing ↗
2026-10-09Schundler RussellOption exercise / conversion (M)Common Stock10,167USD —USD —SEC filing ↗
2026-10-09Saggar RajeevOption exercise / conversion (M)Common Stock8,016USD —USD —SEC filing ↗
2026-10-09Moomaw ScottOption exercise / conversion (M)Common Stock7,466USD —USD —SEC filing ↗
2026-10-09Krepp SarahOption exercise / conversion (M)Common Stock3,178USD —USD —SEC filing ↗
2026-10-09Kaseta MichaelOption exercise / conversion (M)Common Stock12,877USD —USD —SEC filing ↗
2026-10-09JEFFS ROGEROption exercise / conversion (M)Common Stock28,166USD —USD —SEC filing ↗
2026-10-09Boyle DanaOption exercise / conversion (M)Common Stock3,178USD —USD —SEC filing ↗
2026-10-09Adair JasonOption exercise / conversion (M)Common Stock10,248USD —USD —SEC filing ↗
2026-10-05Bloch Stephen MSale (S)Common Stock235,477USD 27.13USD 6,387,596SEC filing ↗
2026-09-14SINGH RAMANSale (S)Common Stock8,468USD 66.16USD 560,243SEC filing ↗
2026-09-14SINGH RAMANOption exercise / conversion (M)Common Stock8,468USD 9.31USD 78,837SEC filing ↗
2026-09-11SINGH RAMANSale (S)Common Stock9,024USD 68.62USD 619,227SEC filing ↗
2026-09-11SINGH RAMANOption exercise / conversion (M)Common Stock9,024USD 9.27USD 83,635SEC filing ↗
2026-09-01Krepp SarahSale (S)Common Stock274USD 67.76USD 18,566SEC filing ↗
2026-08-21Adair JasonSale (S)Common Stock73,631USD 69.09USD 5,087,166SEC filing ↗
2026-08-21Adair JasonOption exercise / conversion (M)Common Stock31,799USD 11.00USD 349,839SEC filing ↗
2026-08-20Rielly-Gauvin KatherineSale (S)Common Stock18,393USD 72.23USD 1,328,526SEC filing ↗
2026-08-20Rielly-Gauvin KatherineOption exercise / conversion (M)Common Stock18,393USD 2.54USD 46,700SEC filing ↗
2026-08-19Rielly-Gauvin KatherineSale (S)Common Stock36,789USD 74.99USD 2,758,807SEC filing ↗
2026-08-19Rielly-Gauvin KatherineOption exercise / conversion (M)Common Stock36,789USD 2.54USD 93,407SEC filing ↗
2026-08-19Saggar RajeevSale (S)Common Stock50,000USD 74.06USD 3,703,000SEC 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 · —
TickerLQDA
CIK0001819576
SectorHealthcare
IndustryDrug Manufacturers—Specialty & Generic Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history624 transaction lines from 2020-11-18 to 2026-10-12
32 P purchase lines · 330 S sale lines · 262 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.