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

SURO CAPITAL CORP.

SSSS · Nasdaq · CIK 0001509470 · Closed-End Funds

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2026-09-21 · Klein Mark D · $39.5K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying5 qualifying line group(s)
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
Klein Mark DChairman, CEO and President
●●○○●●
LOTT RONALD M.Director
▼○▼▼
Green AllisonSee Remarks
○○
Westley LisaDirector
○
Szuch Richard C.Director
○
Potter LeonardDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 2 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION59%Largest buyer: Falk Erik A · $511.0K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-04-21–2026-04-22

Roles in the peak window: Chairman, CEO and President. 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: 2026-09-21 · Klein Mark D.

Recent Form 4 activity

5Purchases
3Sales
15Other Form 4 lines
18SEC filings · 365 days
BUYING5 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

The FINRA report lists no short interest for this ticker.

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
2026-09-21Klein Mark DPurchase (P)Common Stock5,000USD 7.91USD 39,550SEC filing ↗
2026-08-26Falk Erik APurchase (P)Common Stock50,000USD 10.22USD 511,000SEC filing ↗
2026-08-10Klein Mark DPurchase (P)Common Stock26,040USD 9.60USD 249,984SEC filing ↗
2026-04-22Klein Mark DPurchase (P)Common Stock2,500USD 13.25USD 33,125SEC filing ↗
2026-04-21Klein Mark DPurchase (P)Common Stock2,500USD 13.08USD 32,700SEC filing ↗
2025-08-12Klein Mark DPurchase (P)Common Stock10,000USD 8.45USD 84,500SEC filing ↗
2025-08-11Klein Mark DPurchase (P)Common Stock4,571USD 8.69USD 39,722SEC filing ↗
2025-05-09Klein Mark DPurchase (P)Common Stock16,500USD 5.26USD 86,790SEC filing ↗
2024-12-02Klein Mark DPurchase (P)Common Stock743USD 5.49USD 4,079SEC filing ↗
2024-12-02Green AllisonPurchase (P)Common Stock9,100USD 5.48USD 49,868SEC filing ↗
2024-11-29Klein Mark DPurchase (P)Common Stock39,000USD 5.20USD 202,800SEC filing ↗
2024-11-27Klein Mark DPurchase (P)Common Stock32,257USD 5.10USD 164,511SEC filing ↗
2024-11-26Klein Mark DPurchase (P)Common Stock10,000USD 5.03USD 50,300SEC filing ↗
2024-08-20Klein Mark DPurchase (P)Common Stock12,000USD 3.84USD 46,080SEC filing ↗
2023-12-06Klein Mark DPurchase (P)Common Stock14,815USD 4.11USD 60,890SEC filing ↗

Form 4 evidence

23 transaction lines in the latest 365-day window; 194 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-21Klein Mark DPurchase (P)Common Stock5,000USD 7.91USD 39,550SEC filing ↗
2026-09-03LOTT RONALD M.Sale (S)Common Stock5,085USD 9.96USD 50,647SEC filing ↗
2026-08-26Falk Erik APurchase (P)Common Stock50,000USD 10.22USD 511,000SEC filing ↗
Show recent Form 4 evidence (23 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-21Klein Mark DPurchase (P)Common Stock5,000USD 7.91USD 39,550SEC filing ↗
2026-09-03LOTT RONALD M.Sale (S)Common Stock5,085USD 9.96USD 50,647SEC filing ↗
2026-08-26Falk Erik APurchase (P)Common Stock50,000USD 10.22USD 511,000SEC filing ↗
2026-08-10Klein Mark DPurchase (P)Common Stock26,040USD 9.60USD 249,984SEC filing ↗
2026-06-23LOTT RONALD M.Sale (S)Common Stock500USD 12.35USD 6,175SEC filing ↗
2026-06-15Klein Mark DTax withholding (F)Common Stock293,265USD 13.56USD 3,976,673SEC filing ↗
2026-06-15Green AllisonTax withholding (F)Common Stock41,815USD 13.56USD 567,011SEC filing ↗
2026-06-12Klein Mark DAward / grant (A)Common Stock350,000USD 0.00USD 0SEC filing ↗
2026-06-12Green AllisonAward / grant (A)Common Stock60,000USD 0.00USD 0SEC filing ↗
2026-06-10Westley LisaAward / grant (A)Common Stock3,536USD 0.00USD 0SEC filing ↗
2026-06-10Szuch Richard C.Award / grant (A)Common Stock3,536USD 0.00USD 0SEC filing ↗
2026-06-10Potter LeonardAward / grant (A)Common Stock3,536USD 0.00USD 0SEC filing ↗
2026-06-10Mazur MarcAward / grant (A)Common Stock3,536USD 0.00USD 0SEC filing ↗
2026-06-10LOTT RONALD M.Award / grant (A)Common Stock3,536USD 0.00USD 0SEC filing ↗
2026-04-28LOTT RONALD M.Sale (S)Common Stock10,669USD 12.90USD 137,630SEC filing ↗
2026-04-22Klein Mark DPurchase (P)Common Stock2,500USD 13.25USD 33,125SEC filing ↗
2026-04-21Klein Mark DPurchase (P)Common Stock2,500USD 13.08USD 32,700SEC filing ↗
2025-12-15Klein Mark DTax withholding (F)Common Stock17,017USD 9.24USD 157,237SEC filing ↗
2025-12-15Green AllisonTax withholding (F)Common Stock4,232USD 9.24USD 39,104SEC filing ↗
2025-12-10Klein Mark DTax withholding (F)Common Stock17,017USD 9.59USD 163,193SEC filing ↗
2025-12-10Green AllisonTax withholding (F)Common Stock4,232USD 9.59USD 40,585SEC filing ↗
2025-11-21Klein Mark DAward / grant (A)Common Stock174,465USD 0.00USD 0SEC filing ↗
2025-11-21Green AllisonAward / grant (A)Common Stock956USD 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 · —
TickerSSSS
CIK0001509470
SectorClosed-End Funds
Industry— Yahoo Finance
SEC SICInvestment company (SEC forms N-2, N-2/A, N-54A)
ExchangeNasdaq

Data coverage

Local Form 4 history194 transaction lines from 2020-01-02 to 2026-09-21
99 P purchase lines · 19 S sale lines · 76 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.