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

HYPERION DEFI, INC.

HYPD · Nasdaq · CIK 0001682639 · Healthcare · Biotechnology

INSIDER SIGNAL

37.0 / 100

1 buyers · 4 purchase transaction lines · $29.6K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeLow
RoleModerate
RecencyLow
ConvictionStrong
Score anatomy

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

Cluster+7.0 / 35
Purchase size+3.5 / 25
Role+15.5 / 20
Recency+1.0 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 1 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Role uses the day's average · no purchase states a title on the role scale
  • ⚠ Purchase activity is becoming less recent

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
Jung HyunsuSee Remarks
○●●○
Knox David R.Chief Financial Officer
○
Walters Happy DavidDirector
○
Strahlman Ellen RDirector
○
JACOBSON RACHELDirector
○
GELTZEILER MICHAEL SDirector
○
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Jung Hyunsu · $29.6K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-06-01–2026-06-02

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

SIGNAL HISTORY

37.0 / 100

Latest recorded score

→ +0.0 ptsversus the previous recorded snapshot
  1. 37.2
  2. 37.1
  3. 37.1
  4. 37.0
  5. 37.0

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

Recent Form 4 activity

13Purchases
0Sales
9Other Form 4 lines
15SEC filings · 365 days
BUYING4 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER7 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDUnavailable

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
-5.3%
3M
+14.5%
6M
-6.3%
12M
-62.5%

Volatility & liquidity

Volatility
201.3%
Beta
—
Avg daily value
USD 1.5M

Valuation

Market cap
USD 52.8M
P/E
—

Fundamentals

Profit margin
—
ROE
-110.4%
Industry
Biotechnology

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, 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: 2026-08-10 · Status: PASS

Short interest

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

Shares short
1,131,149
Previous report
1,241,145
Avg daily volume
588,762
Days to cover
1.9

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
2026-06-02Jung HyunsuPurchase (P)Common Stock, par value $0.00011,000USD 3.66USD 3,660SEC filing ↗
2026-06-01Jung HyunsuPurchase (P)Common Stock, par value $0.00017,000USD 3.70USD 25,920SEC filing ↗
2025-12-31Knox David R.Purchase (P)Common Stock, par value $0.000127,950USD 3.59USD 100,340SEC filing ↗
2025-12-29Strahlman Ellen RPurchase (P)Common Stock, par value $.000123,968USD 3.60USD 86,403SEC filing ↗
2025-12-26Strahlman Ellen RPurchase (P)Common Stock, par value $.00016,912USD 3.86USD 26,680SEC filing ↗
2025-12-18Strahlman Ellen RPurchase (P)Common Stock, par value $.000138,444USD 3.14USD 120,714SEC filing ↗
2025-12-17Walters Happy DavidPurchase (P)Common Stock, par value $0.000161,930USD 3.02USD 187,029SEC filing ↗
2025-12-17GELTZEILER MICHAEL SPurchase (P)Common Stock, par value $0.000130,000USD 3.01USD 90,300SEC filing ↗
2024-08-28Rowe Michael MPurchase (P)Common Stock, par value $0.000127,071USD 0.52USD 14,077SEC filing ↗
2024-08-26Rowe Michael MPurchase (P)Common Stock, par value $0.000150,000USD 0.57USD 28,500SEC filing ↗
2024-07-02Grant Stuart M.Purchase (P)Common stock, par value $0.00011,515,151USD 0.66USD 1,000,000SEC filing ↗
2024-03-28Grant Stuart M.Purchase (P)Common stock, par value $0.0001100,000USD 0.98USD 98,000SEC filing ↗
2024-03-19Grant Stuart M.Purchase (P)Common stock, par value $0.000150,000USD 1.23USD 61,500SEC filing ↗
2024-03-08Grant Stuart M.Purchase (P)Common stock, par value $0.000110,717USD 1.58USD 16,933SEC filing ↗
2023-12-04Rowe Michael MPurchase (P)Common Stock, par value $.00014,890USD 1.36USD 6,650SEC filing ↗

Form 4 evidence

22 transaction lines in the latest 365-day window; 175 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-29Knox David R.Tax withholding (F)Common Stock, par value $0.000119,563USD 0.00USD 0SEC filing ↗
2026-08-16Jung HyunsuTax withholding (F)Common Stock, par value $0.000140,000USD 0.00USD 0SEC filing ↗
2026-06-30Walters Happy DavidAward / grant (A)Common Stock, par value $0.000158,917USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (17 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-29Knox David R.Tax withholding (F)Common Stock, par value $0.000119,563USD 0.00USD 0SEC filing ↗
2026-08-16Jung HyunsuTax withholding (F)Common Stock, par value $0.000140,000USD 0.00USD 0SEC filing ↗
2026-06-30Walters Happy DavidAward / grant (A)Common Stock, par value $0.000158,917USD 0.00USD 0SEC filing ↗
2026-06-30Strahlman Ellen RAward / grant (A)Common Stock, par value $.000158,917USD 0.00USD 0SEC filing ↗
2026-06-30JACOBSON RACHELAward / grant (A)Common Stock, par value $.000158,917USD 0.00USD 0SEC filing ↗
2026-06-30GELTZEILER MICHAEL SAward / grant (A)Common Stock, par value $0.000158,917USD 0.00USD 0SEC filing ↗
2026-06-02Jung HyunsuPurchase (P)Common Stock, par value $0.00011,000USD 3.66USD 3,660SEC filing ↗
2026-06-01Jung HyunsuPurchase (P)Common Stock, par value $0.00017,000USD 3.70USD 25,920SEC filing ↗
2026-05-27Jung HyunsuTax withholding (F)Common Stock, par value $0.000140,000USD 0.00USD 0SEC filing ↗
2026-01-12Rubenstein RobertAward / grant (A)Common Stock, par value $0.000175,000USD 0.00USD 0SEC filing ↗
2025-12-31Knox David R.Purchase (P)Common Stock, par value $0.000127,950USD 3.59USD 100,340SEC filing ↗
2025-12-29Strahlman Ellen RPurchase (P)Common Stock, par value $.000123,968USD 3.60USD 86,403SEC filing ↗
2025-12-29Jung HyunsuTax withholding (F)Common Stock, par value $0.000182,324USD 0.00USD 0SEC filing ↗
2025-12-26Strahlman Ellen RPurchase (P)Common Stock, par value $.00016,912USD 3.86USD 26,680SEC filing ↗
2025-12-18Strahlman Ellen RPurchase (P)Common Stock, par value $.000138,444USD 3.14USD 120,714SEC filing ↗
2025-12-17Walters Happy DavidPurchase (P)Common Stock, par value $0.000161,930USD 3.02USD 187,029SEC filing ↗
2025-12-17GELTZEILER MICHAEL SPurchase (P)Common Stock, par value $0.000130,000USD 3.01USD 90,300SEC 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 · —
TickerHYPD
CIK0001682639
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC6199 Finance Services
ExchangeNasdaq

Data coverage

Local Form 4 history175 transaction lines from 2020-03-23 to 2026-09-29
90 P purchase lines · 5 S sale lines · 80 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.