SEIDENBERG BETH C

Director · Ten-percent owner · SGMT, KYTX, VERA, SLRN

As of 2026-09-16, SEIDENBERG BETH C has 74 Form 4 transactions on record across 4 companies — 61 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: $1.1MIndirect: $6.0M$7.1Mas of 2026-09-16
  • Direct $1.1M
  • Indirect $6.0M
KYTXindirect869,317 sh$6.0M
VERAdirect17,084 sh$543K
SGMTdirect39,567 sh$414K
KYTXdirect20,582 sh$142K

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

SLRN · 8 trades
2025-05-21: Disposition, 60,000 sh2025-05-21: Disposition, 9,790,729 sh2025-05-21: Disposition, 23,243 sh2025-05-21: Disposition, 92,158 sh2025-05-21: Disposition, 60,000 sh2025-05-21: Disposition, 9,790,729 sh2025-05-21: Disposition, 92,158 sh2025-05-21: Disposition, 23,243 sh
KYTX · 5 trades
2026-05-27: Award / grant, 20,582 sh ($0)2026-05-27: Award / grant, 5,093 sh ($0)2025-12-18: Purchase, 133,333 sh ($1000K)2025-05-29: Award / grant, 16,634 sh ($0)2025-05-29: Award / grant, 65,351 sh ($0)
SGMT · 3 trades
2026-06-12: Award / grant, 39,567 sh ($0)2025-06-09: Award / grant, 32,250 sh ($0)2025-06-06: Award / grant, 28,522 sh ($0)
VERA · 2 trades
2026-05-21: Award / grant, 17,084 sh ($0)2025-05-14: Award / grant, 14,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-12-18KYTXPurchase133,333 @ $7.50$1000K+18.1% of holding869,317Form 4
73 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-10—Conversion165,5190Form 4
2026-08-10—Conversion1,027,6350Form 4
2026-08-10—Conversion3,464,0720Form 4
2026-08-10—Conversion1,484,4010Form 4
2026-08-10—Conversion2,066,8570Form 4
2026-08-10—Conversion165,5190Form 4
2026-08-10—Conversion938,9791,368,532Form 4
2026-08-10—Conversion3,547,8424,916,374Form 4
2026-08-10—Conversion1,027,6355,944,009Form 4
2026-08-10—Conversion3,464,0723,510,927Form 4
2026-08-10—Conversion1,484,4014,995,328Form 4
2026-08-10—Conversion165,5195,160,847Form 4
2026-08-10—Conversion2,066,8572,094,813Form 4
2026-08-10—Conversion938,9790Form 4
2026-08-10—Conversion3,547,8420Form 4
2026-08-10—Conversion1,027,6350Form 4
2026-08-10—Conversion3,464,0720Form 4
2026-08-10—Conversion1,484,4010Form 4
2026-08-10—Conversion2,066,8570Form 4
2026-08-10—Conversion938,9791,368,532Form 4
2026-08-10—Conversion3,547,8424,916,374Form 4
2026-08-10—Conversion1,027,6355,944,009Form 4
2026-08-10—Conversion3,464,0723,510,927Form 4
2026-08-10—Conversion1,484,4014,995,328Form 4
2026-08-10—Conversion165,5195,160,847Form 4
2026-08-10—Conversion2,066,8572,094,813Form 4
2026-08-10—Conversion938,9790Form 4
2026-08-10—Conversion3,547,8420Form 4
2026-08-10—Conversion1,027,6350Form 4
2026-08-10—Conversion3,464,0720Form 4
2026-08-10—Conversion1,484,4010Form 4
2026-08-10—Conversion2,066,8570Form 4
2026-08-10—Conversion165,5190Form 4
2026-08-10—Conversion938,9791,368,532Form 4
2026-08-10—Conversion3,547,8424,916,374Form 4
2026-08-10—Conversion1,027,6355,944,009Form 4
2026-08-10—Conversion3,464,0723,510,927Form 4
2026-08-10—Conversion1,484,4014,995,328Form 4
2026-08-10—Conversion165,5195,160,847Form 4
2026-08-10—Conversion2,066,8572,094,813Form 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.