STOCK TITAN

Director Mats Wahlstrom boosts TriSalus (TLSI) stake with 60,000-share open-market buy

Filing Impact
(Moderate)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

TriSalus Life Sciences director Mats Wahlstrom bought additional common stock in the open market. He acquired 60,000 shares at a weighted average price of $2.53 per share, with individual trades priced between $2.52 and $2.56. Following this purchase, he holds 147,555 shares directly.

Wahlstrom is also associated with significant indirect holdings. HW Investment Partners, LLC holds 1,370,028 shares, where he is a managing member and he disclaims beneficial ownership beyond his economic interest. Leonard Capital LLC holds 1,444,447 shares, over which he and his spouse share voting and investment discretion.

Positive

  • None.

Negative

  • None.
Insider Wahlstrom Mats
Role null
Bought 60,000 shs ($152K)
Type Security Shares Price Value
Purchase Common Stock 60,000 $2.53 $152K
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 147,555 shares (Direct, null); Common Stock — 1,444,447 shares (Indirect, By Leonard Capital LLC)
Footnotes (1)
  1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.52 to $2.56 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. The Reporting Person shares voting and investment discretion with his spouse with respect to the shares held directly by Leonard Capital LLC. The Reporting Person is a managing member of HW Investment Partners, LLC ("HW Investment") and shares voting and investment discretion with respect to the shares held directly by HW Investment. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.
Open-market purchase 60,000 shares Common Stock bought on 2026-05-15
Weighted average price $2.53 per share Price for 60,000-share purchase
Price range $2.52–$2.56 per share Individual trade prices for purchased shares
Direct holdings after buy 147,555 shares Common Stock held directly by Wahlstrom
HW Investment Partners holdings 1,370,028 shares Indirect TLSI shares via HW Investment Partners, LLC
Leonard Capital holdings 1,444,447 shares Indirect TLSI shares via Leonard Capital LLC
open-market purchase financial
"He acquired 60,000 shares at a weighted average price of $2.53 per share"
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
beneficial ownership financial
"The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein."
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
voting and investment discretion financial
"shares voting and investment discretion with his spouse with respect to the shares held directly by Leonard Capital LLC."
pecuniary interest financial
"disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein."
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Wahlstrom Mats

(Last)(First)(Middle)
6272 W. 91ST AVENUE

(Street)
WESTMINSTER COLORADO 80031

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
TriSalus Life Sciences, Inc. [ TLSI ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/15/2026P60,000A$2.53(1)147,555D
Common Stock1,444,447IBy Leonard Capital LLC(2)
Common Stock1,370,028IBy HW Investment Partners, LLC(3)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.52 to $2.56 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range.
2. The Reporting Person shares voting and investment discretion with his spouse with respect to the shares held directly by Leonard Capital LLC.
3. The Reporting Person is a managing member of HW Investment Partners, LLC ("HW Investment") and shares voting and investment discretion with respect to the shares held directly by HW Investment. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.
Remarks:
/s/ Mary Szela, Attorney-in-Fact05/18/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Mats Wahlstrom report at TriSalus Life Sciences (TLSI)?

Director Mats Wahlstrom reported an open-market purchase of 60,000 TriSalus Life Sciences common shares at a weighted average price of $2.53. The shares were bought in multiple trades between $2.52 and $2.56, increasing his direct holdings to 147,555 shares.

At what prices did Mats Wahlstrom buy TLSI stock in this Form 4 filing?

The purchase was executed at a weighted average price of $2.53 per TLSI share, across multiple trades priced between $2.52 and $2.56. This range reflects individual transaction prices that together produced the reported average purchase price.

How many TriSalus Life Sciences shares does Mats Wahlstrom own directly after the transaction?

After buying 60,000 shares, Mats Wahlstrom directly owns 147,555 TriSalus Life Sciences common shares. This figure reflects his direct holdings only and excludes shares held indirectly through entities such as Leonard Capital LLC and HW Investment Partners, LLC.

What indirect TLSI holdings are associated with Mats Wahlstrom in the Form 4?

The Form 4 shows 1,370,028 TLSI shares held by HW Investment Partners, LLC and 1,444,447 shares held by Leonard Capital LLC. Wahlstrom is a managing member of HW Investment and shares discretion over Leonard Capital LLC holdings with his spouse.

Does Mats Wahlstrom disclaim any beneficial ownership of TLSI shares in this filing?

Yes. For shares held by HW Investment Partners, LLC, Wahlstrom disclaims beneficial ownership except to the extent of his pecuniary interest. He is a managing member and shares voting and investment discretion over those HW Investment-held shares, according to the Form 4 footnote.

What does the weighted average price disclosure mean in the TLSI Form 4?

The filing reports a weighted average price of $2.53 because the 60,000 TLSI shares were bought in multiple trades between $2.52 and $2.56. Wahlstrom offers to provide detailed breakdowns of the number of shares purchased at each specific price upon request.