Charles O. Williams

CIK: 0001325818

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (14.3%)

Position reduction

Option Exercises (M)3 (14.3%)

Derivative conversions

Awards (A)11 (52.4%)

Compensation grants

Other (G, F, J, C, D, …)4 (19.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

SRZN

Surrozen, Inc./DE

Officer

Discretionary Trading P&L

Holdings

Transaction History (21 total)

SRZN
Surrozen, Inc./DE
Jun 15, 2026
Award(A)
Direct
1.7K shares at avg. $8.11$14K
SRZN
Surrozen, Inc./DE
May 4, 2026
Sale(S)
Direct
2K shares at avg. $33.33$68K
SRZN
Surrozen, Inc./DE
May 1, 2026
Exercise(M)
Direct
5.6K shares-
SRZN
Surrozen, Inc./DE
Feb 17, 2026
Award(A)
Restricted Stock Unit
Direct
102.9K shares-
SRZN
Surrozen, Inc./DE
Feb 17, 2026
Award(A)
Employee Stock Option (right to buy)
Direct
102.9K shares-
SRZN
Surrozen, Inc./DE
Jan 23, 2026
Award(A)
Employee Stock Option (right to buy)
Direct
500 shares-
SRZN
Surrozen, Inc./DE
Jan 5, 2026
Sale(S)
Direct
1.6K shares at avg. $19.87$31K
SRZN
Surrozen, Inc./DE
Jan 2, 2026
Exercise(M)
Direct
3.5K shares-
SRZN
Surrozen, Inc./DE
Dec 15, 2025
Award(A)
Direct
1.7K shares at avg. $8.11$14K
SRZN
Surrozen, Inc./DE
Jun 13, 2025
Award(A)
Direct
400 shares at avg. $8.06$3K
SRZN
Surrozen, Inc./DE
May 1, 2025
Award(A)
Restricted Stock Unit
Direct
11.3K shares-
SRZN
Surrozen, Inc./DE
May 1, 2025
Award(A)
Option (right to buy)
Direct
33.8K shares-
SRZN
Surrozen, Inc./DE
Mar 24, 2025
Disposition(D)
Series B Common Stock Warrant (right to buy)
Direct
1.6K shares-
SRZN
Surrozen, Inc./DE
Mar 24, 2025
Disposition(D)
Series A Common Stock Warrant (right to buy)
Direct
1.5K shares-
SRZN
Surrozen, Inc./DE
Mar 24, 2025
Disposition(D)
Series D Common Stock Warrant (right to buy)
Direct
5.7K shares-
SRZN
Surrozen, Inc./DE
Mar 24, 2025
Award(A)
Series A Common Stock Warrant (right to buy)
Direct
1.5K shares-
SRZN
Surrozen, Inc./DE
Mar 24, 2025
Award(A)
Series B Common Stock Warrant (right to buy)
Direct
1.6K shares-
SRZN
Surrozen, Inc./DE
Mar 24, 2025
Disposition(D)
Series C Common Stock Warrant (right to buy)
Direct
5.7K shares-
SRZN
Surrozen, Inc./DE
Jan 17, 2025
Award(A)
Option (right to buy)
Direct
45K shares-
SRZN
Surrozen, Inc./DE
Jan 3, 2025
Sale(S)
Direct
1.2K shares at avg. $17.37$21K
SRZN
Surrozen, Inc./DE
Jan 2, 2025
Exercise(M)
Direct
3.5K shares-

		Type	Shares	Price		Ownership
Jun 15, 2026	SRZN Surrozen, Inc./DE	Award(A)	1,666	$8.11	$13,511	Direct
May 4, 2026	SRZN Surrozen, Inc./DE	Sale(S)	2,036	$33.33	$67,866	Direct
May 1, 2026	SRZN Surrozen, Inc./DE	Exercise(M)	5,625	-	$0	Direct
Feb 17, 2026	SRZN Surrozen, Inc./DE	Award(A) Restricted Stock Unit	102,900	-	-	Direct
Feb 17, 2026	SRZN Surrozen, Inc./DE	Award(A) Employee Stock Option (right to buy)	102,900	-	-	Direct
Jan 23, 2026	SRZN Surrozen, Inc./DE	Award(A) Employee Stock Option (right to buy)	500	-	-	Direct
Jan 5, 2026	SRZN Surrozen, Inc./DE	Sale(S)	1,566	$19.87	$31,109	Direct
Jan 2, 2026	SRZN Surrozen, Inc./DE	Exercise(M)	3,500	-	$0	Direct
Dec 15, 2025	SRZN Surrozen, Inc./DE	Award(A)	1,666	$8.11	$13,511	Direct
Jun 13, 2025	SRZN Surrozen, Inc./DE	Award(A)	400	$8.06	$3,224	Direct
May 1, 2025	SRZN Surrozen, Inc./DE	Award(A) Restricted Stock Unit	11,250	-	-	Direct
May 1, 2025	SRZN Surrozen, Inc./DE	Award(A) Option (right to buy)	33,750	-	-	Direct
Mar 24, 2025	SRZN Surrozen, Inc./DE	Disposition(D) Series B Common Stock Warrant (right to buy)	1,603	-	-	Direct
Mar 24, 2025	SRZN Surrozen, Inc./DE	Disposition(D) Series A Common Stock Warrant (right to buy)	1,474	-	-	Direct
Mar 24, 2025	SRZN Surrozen, Inc./DE	Disposition(D) Series D Common Stock Warrant (right to buy)	5,712	-	-	Direct
Mar 24, 2025	SRZN Surrozen, Inc./DE	Award(A) Series A Common Stock Warrant (right to buy)	1,474	-	-	Direct
Mar 24, 2025	SRZN Surrozen, Inc./DE	Award(A) Series B Common Stock Warrant (right to buy)	1,603	-	-	Direct
Mar 24, 2025	SRZN Surrozen, Inc./DE	Disposition(D) Series C Common Stock Warrant (right to buy)	5,712	-	-	Direct
Jan 17, 2025	SRZN Surrozen, Inc./DE	Award(A) Option (right to buy)	45,000	-	-	Direct
Jan 3, 2025	SRZN Surrozen, Inc./DE	Sale(S)	1,181	$17.37	$20,514	Direct
Jan 2, 2025	SRZN Surrozen, Inc./DE	Exercise(M)	3,500	-	$0	Direct

1-21 of 21 transactions

About Williams Charles O

Williams Charles O (SEC CIK 0001325818) files insider reports with the SEC as Chief Operating Officer of Surrozen, Inc./DE (SRZN).

Signal8 holds 11 ownership filings by Williams Charles O, all Form 4s, filed between Jan 6, 2025 and Jun 16, 2026. Those filings report 21 transactions, from Jan 2, 2025 to Jun 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Williams Charles O's filings is in SOUTH SAN FRANCISCO, CA.

Recent filings by Williams Charles O

Jun 15, 2026: Grant or award of SRZN shares (Form 4, code A).
May 4, 2026: Open-market sale of SRZN shares (Form 4, code S).
May 1, 2026: Option exercise of SRZN shares (Form 4, code M).
Feb 17, 2026: Grants or awards of SRZN derivative securities (2 lines, Form 4, code A).
Jan 23, 2026: Grant or award of SRZN derivative securities (Form 4, code A).

Other insiders filing for Surrozen, Inc./DE (SRZN)

COLUMN GROUP III GP, LP, 10% Owner
Kutzkey Tim, Director
TCG Crossover GP II, LLC, 10% Owner
Maleki Andrew Pedrum, Chief Financial Officer
Li Yang, Exec. Vice President, Research
Parker Craig C, Chief Executive Officer

How to read Form 4 transaction codes