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SEC Form 4 research

ZIOPHARM ONCOLOGY INC insider transactions

Inspect ZIOPHARM ONCOLOGY INC's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001107421
Reporting owners
49
Officers and directors
18
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-10-082026-10-06Weis HolgerA23,564$0.74Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-06 and its public availability date is 2026-10-08. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0001193125-26-417970 ↗SEC accession 0001193125-26-417971 ↗SEC accession 0001193125-26-417969 ↗

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 9 rows, 7 columns

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2026-10-082026-10-06Weis HolgerA23,564$0.74Not reported
2026-10-082026-10-06Vieser JaimeA22,669$0.74Not reported
2026-10-082026-10-06Postma Robert WA21,829$0.74Not reported
2026-10-082026-10-06Jerman Michael AllenA20,990$0.74Not reported
2026-08-122026-08-06Weis HolgerA4,363$2.01Not reported
2026-07-282026-07-23Jerman Michael AllenA8,138$1.92Not reported
2026-07-282026-07-23Weis HolgerA4,568$1.92Not reported
2026-07-282026-07-23Postma Robert WA8,463$1.92Not reported
2026-07-282026-07-23Vieser JaimeA8,789$1.92Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 21 displayed rows: Officers and directors in the directory

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WEISER MICHAEL000122144917
Boyle Kevin S. Sr.00018806003
Weis Holger00018469841
Vieser Jaime00018460454
Hagen Heidi00015850843
Huang James000157316031
Postma Robert W00018278473
BELBEL CAESAR J000110975321
BRENNAN MURRAY00013385353
Buck Jill00017804262
CANNON JAMES ANTHONY00013385331
Cooper Laurence James Neil00016415063
De Groot Eleanor00017804203
Fowler Wyche00013012686
Hadfield Robert00016306872
KIRK RANDAL J0001091823566
Lafond Kevin G00014295596
LEBEL FRANCOIS000103870424
LEWIS JONATHAN00013385322
MAUNEY DAVID M MD00013058322
MCINERNEY TIMOTHY00012260204
WEISER MICHAEL ↗Boyle Kevin S. Sr. ↗Weis Holger ↗Vieser Jaime ↗Hagen Heidi ↗Huang James ↗Postma Robert W ↗BELBEL CAESAR J ↗BRENNAN MURRAY ↗Buck Jill ↗CANNON JAMES ANTHONY ↗Cooper Laurence James Neil ↗De Groot Eleanor ↗Fowler Wyche ↗Hadfield Robert ↗KIRK RANDAL J ↗Lafond Kevin G ↗LEBEL FRANCOIS ↗LEWIS JONATHAN ↗MAUNEY DAVID M MD ↗MCINERNEY TIMOTHY ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.