Home

Timothy P Kelly

CIK 1754067 · Chief Technology Officer · last filed 2026-02-27

Timothy P Kelly is a Chief Technology Officer who has filed 21 SEC Form 4 insider transactions across 2 companies since 2018. The most recent filing shows the insider sold $12.0K of CRBU on Feb 27, 2026. Across all open-market trades the lifetime net is −$198.5K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $95.9K across reported positions. 7 SEC filings were submitted jointly with Caribou Biosciences, Inc.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$95.9K

Companies

2

Total Filings

21

Lifetime Open-Market Net

-$198.5K

Filer Profile

Reported Address
C/O HOMOLOGY MEDICINES, INC.
ONE PATRIOTS PARK
BEDFORD, MA 01730
Related Filers
Caribou Biosciences, Inc. — 7 joint filings, latest 2026-02-27
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
CRBU Chief Technology Officer 73,125 $1.29 $94.3K -$18.2K 4 2026-02-27
FIXX Chief Operating Officer 124 $12.57 $1.6K -$180.3K 16 2022-02-28

Recent Filings

21 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-02-27 CRBU Sell (S) −6,228 -$12.0K EDGAR
2026-02-25 CRBU Notice (144) −6,228 -$12.1K EDGAR
2026-02-24 CRBU Mixed +41,853 -$6.2K EDGAR
2025-02-21 CRBU Grant (A) +37,500 $0 EDGAR
2024-01-09 CRBU Grant (A) — $0 EDGAR
2022-02-28 FIXX Grant (A) — $0 EDGAR
2022-01-12 FIXX Mixed +2,224 -$5.3K EDGAR
2021-09-08 FIXX Sell (S) −54 -$416 EDGAR
2021-09-08 FIXX Sell (S) −6,232 -$69.6K EDGAR
2021-04-09 FIXX Grant (A) — $0 EDGAR
Showing 1–10 of 21
Page 1 of 3
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.