Ling Karen

Director · IRTC, BLCO

As of 2026-09-16, Ling Karen has 6 Form 4 transactions on record across 2 companies — 4 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: $2.3MIndirect: $0$2.3Mas of 2026-09-16
  • Direct $2.3M
  • Indirect $0
IRTCdirect11,141 sh$1.2M
BLCOdirect61,518 sh$1.1M

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

BLCO · 4 trades
2026-05-26: Award / grant, 15,842 sh ($250K)2026-02-19: Purchase, 4,000 sh ($71K)2026-02-19: Award / grant, 4,000 sh ($0)2025-05-27: Award / grant, 20,338 sh ($0)
IRTC · 2 trades
2026-05-27: Award / grant, 1,573 sh ($0)2025-05-28: Award / grant, 1,358 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-02-19BLCOPurchase4,000 @ $17.74$71K+10.6% of holding41,676Form 4
5 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-05-27IRTCAward / grant1,57311,141Form 4
2026-05-26BLCOAward / grant15,84261,518Form 4
2026-02-19BLCOAward / grant4,00045,676Form 4
2025-05-28IRTCAward / grant1,3589,568Form 4
2025-05-27BLCOAward / grant20,33837,676Form 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.