Harborne Christopher

Ten-percent owner · ISSC

As of 2026-09-16, Harborne Christopher has 25 Form 4 transactions on record across 1 company — 0 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $0Indirect: $29.4M$29.4Mas of 2026-09-16
  • Direct $0
  • Indirect $29.4M
ISSCindirect1,583,411 sh$29.4M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

ISSC · 25 trades
2025-06-30: Sale, 145,009 sh ($2.0M)2025-06-27: Sale, 40,919 sh ($552K)2025-06-27: Sale, 31,580 sh ($439K)2025-06-26: Sale, 59,667 sh ($788K)2025-06-25: Sale, 90,655 sh ($1.2M)2025-06-23: Sale, 89,414 sh ($1.1M)2025-06-20: Sale, 31,953 sh ($391K)2025-06-18: Sale, 17,198 sh ($211K)2025-06-17: Sale, 21,809 sh ($279K)2025-06-11: Sale, 5,116 sh ($60K)2025-06-10: Sale, 438 sh ($5K)2025-06-09: Sale, 63,592 sh ($749K)2025-06-06: Sale, 35,437 sh ($417K)2025-06-05: Sale, 11,944 sh ($141K)2025-06-04: Sale, 43,997 sh ($513K)2025-06-03: Sale, 6,766 sh ($78K)2025-06-02: Sale, 17,740 sh ($204K)2025-02-06: Sale, 14,970 sh ($174K)2025-02-04: Sale, 63,368 sh ($710K)2025-01-31: Sale, 42,788 sh ($507K)2025-01-30: Sale, 7,086 sh ($79K)2025-01-24: Sale, 6,713 sh ($76K)2025-01-23: Sale, 69,599 sh ($780K)2025-01-21: Sale, 98,600 sh ($1.1M)2025-01-17: Sale, 10,000 sh ($102K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-06-30ISSCSale145,009 @ $13.69$2.0M−8.4% of holding1,583,411Form 4
2025-06-27ISSCSale40,919 @ $13.50$552K−2.3% of holding1,760,000Form 4
2025-06-27ISSCSale31,580 @ $13.91$439K−1.8% of holding1,728,420Form 4
2025-06-26ISSCSale59,667 @ $13.21$788K−3.2% of holding1,800,919Form 4
2025-06-25ISSCSale90,655 @ $12.92$1.2M−4.6% of holding1,860,586Form 4
2025-06-23ISSCSale89,414 @ $12.50$1.1M−4.4% of holding1,951,241Form 4
2025-06-20ISSCSale31,953 @ $12.25$391K−1.5% of holding2,040,655Form 4
2025-06-18ISSCSale17,198 @ $12.28$211K−0.8% of holding2,072,608Form 4
2025-06-17ISSCSale21,809 @ $12.77$279K−1.0% of holding2,089,806Form 4
2025-06-11ISSCSale5,116 @ $11.77$60K−0.2% of holding2,111,615Form 4
2025-06-10ISSCSale438 @ $11.75$5K−0.0% of holding2,116,731Form 4
2025-06-09ISSCSale63,592 @ $11.78$749K−2.9% of holding2,117,169Form 4
2025-06-06ISSCSale35,437 @ $11.76$417K−1.6% of holding2,180,761Form 4
2025-06-05ISSCSale11,944 @ $11.79$141K−0.5% of holding2,216,198Form 4
2025-06-04ISSCSale43,997 @ $11.67$513K−1.9% of holding2,228,142Form 4
2025-06-03ISSCSale6,766 @ $11.50$78K−0.3% of holding2,272,139Form 4
2025-06-02ISSCSale17,740 @ $11.51$204K−0.8% of holding2,278,905Form 4
2025-02-06ISSCSale14,970 @ $11.59$174K−0.6% of holding2,296,645Form 4
2025-02-04ISSCSale63,368 @ $11.21$710K−2.7% of holding2,311,615Form 4
2025-01-31ISSCSale42,788 @ $11.84$507K−1.8% of holding2,374,983Form 4
2025-01-30ISSCSale7,086 @ $11.17$79K−0.3% of holding2,417,771Form 4
2025-01-24ISSCSale6,713 @ $11.32$76K−0.3% of holding2,424,857Form 4
2025-01-23ISSCSale69,599 @ $11.21$780K−2.8% of holding2,431,570Form 4
2025-01-21ISSCSale98,600 @ $10.82$1.1M−3.8% of holding2,501,169Form 4
2025-01-17ISSCSale10,000 @ $10.16$102K−0.4% of holding2,599,769Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.