Insider transactions

Randal J Kirk

CIK 1091823 · Executive Chairman · last filed 2026-03-16

"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.

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Disclosed Exposure
$2.97M
Companies
12
Total Filings
232
Lifetime Open-Market Net
$457.19M

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

XON price and trades

Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.

Shares held

Shares owned after each reported transaction on this company (direct holdings as reported).

Open-market buying and selling

by month

Dollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.

Exposure by company

latest
OfficerDirector10% owner* stale (no filing in 3 yrs)

Most recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.

Filer Profile

Reported Address
1881 GROVE AVENUE
RADFORD, VA 24141
Related Filers
INTREXON CORP — 232 joint filings, latest 2026-03-31
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
PGEN Director 477,492 $6.15 $2.94M $42.06M 40 2026-03-16
AQB 10%+ Owner 375 $1.11 $418 $714.5K 11 2021-11-24
PRECIGEN, INC. (XON) Delisted Executive Chairman 176,628 — — $206.60M 80 2020-01-07
Theriva Biologics, Inc. (SYN) Delisted 10%+ Owner 23,449 $1.02 $23.9K $20.80M 4 2019-04-03
Alaunos Therapeutics, Inc. (ZIOP) Delisted Director 3,601,994 $0.87 $3.12M $43.29M 20 2018-10-09
PRPO 10%+ Owner 1,689 $19.75 $33.4K -$10.1K 3 2018-08-30
HALOZYME THERAPEUTICS, INC. (HTI) Delisted 10%+ Owner 3,917,041 — — $39.79M 39 2018-08-28
Fibrocell Science, Inc. (FCSC) Delisted 10%+ Owner 426,719 — — $41.32M 4 2017-03-10
OGEN 10%+ Owner 805 $0.37 $301 $8.55M 3 2016-07-05
Precipio, Inc. (TBIO) Delisted 10%+ Owner 5,593 $0.00 $1 $4.47M 5 2016-01-11
CLINICAL DATA INC (CLDA) Delisted Director 0 — — $49.60M 10 2011-04-12
NEW RIVER PHARMACEUTICALS INC (NRPH) Delisted Chairman, President and CEO — — — $0 1 2007-01-31

Recent Filings · Page 8 of 24

232 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
2019-05-30 PRECIGEN, INC. (XON) Delisted Buy (P) +495,271 $2.35M EDGAR
2019-05-24 PRECIGEN, INC. (XON) Delisted Buy (P) +273,367 $1.28M EDGAR
2019-05-24 PRECIGEN, INC. (XON) Delisted Buy (P) +410,050 $1.92M EDGAR
2019-05-21 PRECIGEN, INC. (XON) Delisted Buy (P) +422,423 $1.97M EDGAR
2019-05-21 PRECIGEN, INC. (XON) Delisted Buy (P) +633,631 $2.95M EDGAR
2019-05-15 PRECIGEN, INC. (XON) Delisted Buy (P) +838,482 $3.69M EDGAR
2019-05-15 PRECIGEN, INC. (XON) Delisted Buy (P) +1,257,727 $5.53M EDGAR
2019-05-02 PRECIGEN, INC. (XON) Delisted Grant (A) +552,504 $200.1K EDGAR
2019-04-03 Theriva Biologics, Inc. (SYN) Delisted Sell (S) −301,130 -$197.7K EDGAR
2019-04-02 PRECIGEN, INC. (XON) Delisted Grant (A) +38,022 $200.0K EDGAR
Showing 71–80 of 232
Page 8 of 24
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.