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Alphatec Holdings, Inc. (ATEC) GC sells 8,168 shares in trading plan

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Marshall Tyson Eliot, General Counsel & Corporate Secretary of Alphatec Holdings, Inc., sold 8,168 shares of common stock on August 5, 2026. The sale was executed under a Rule 10b5-1 trading plan adopted March 14, 2025 to satisfy tax withholding obligations from vesting restricted stock units. The weighted average sale price was $9.65 per share, with individual trades between $9.41 and $10.01. Following this transaction, Eliot directly holds 630,398 Alphatec shares.

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Insider Marshall Tyson Eliot
Role GENERAL COUNSEL & CORP. SEC.
Sold 8,168 shs ($79K)
Type Security Shares Price Value
Sale Common Stock F1, F2 8,168 $9.65 $79K
Holdings After Transaction: Common Stock — 630,398 shares (Direct)
Footnotes (2)
  1. F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 14, 2025 to satisfy certain tax withholding obligations of the reporting person resulting from the vesting of restricted stock units.
  2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.41 to $10.01, inclusive. 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 sold at each separate price within the ranges set forth in this footnote.
Shares sold 8,168 shares Common stock sold by Marshall Tyson Eliot on August 5, 2026
Weighted average sale price $9.65 per share Average price for 8,168 shares sold in multiple transactions
Sale price range $9.41–$10.01 per share Range of individual transaction prices within the aggregated sale
Shares owned after transaction 630,398 shares Direct Alphatec common stock holdings of Marshall Tyson Eliot post-sale
10b5-1 plan adoption date March 14, 2025 Date Eliot’s Rule 10b5-1 trading plan was adopted
Rule 10b5-1 trading plan regulatory
"The sales ... were effected pursuant to a Rule 10b5-1 trading plan adopted..."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
restricted stock units financial
"tax withholding obligations ... resulting from the vesting of restricted stock units."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
weighted average price financial
"The price reported ... 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.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What insider transaction did ATEC report for Marshall Tyson Eliot?
Marshall Tyson Eliot sold 8,168 Alphatec (ATEC) common shares on August 5, 2026. The company states the sale was made under a Rule 10b5-1 trading plan to cover tax withholding from vesting restricted stock units, leaving him with 630,398 shares held directly.

At what prices were Alphatec (ATEC) shares sold in this insider trade?
The shares were sold at a weighted average price of $9.65 per share. Alphatec discloses that the individual sale prices ranged from $9.41 to $10.01, inclusive, across multiple transactions, and detailed trade-by-trade pricing is available on request from the reporting person.

Was the ATEC insider sale by Marshall Tyson Eliot made under a Rule 10b5-1 plan?
Yes. Alphatec reports the sale was effected under a Rule 10b5-1 trading plan adopted by Marshall Tyson Eliot on March 14, 2025. The company states this plan was established to satisfy certain tax withholding obligations arising from the vesting of restricted stock units.

How many Alphatec (ATEC) shares does Marshall Tyson Eliot own after the sale?
After selling 8,168 shares, Marshall Tyson Eliot directly holds 630,398 Alphatec common shares. This post-transaction holding reflects his remaining direct ownership position as reported, following the August 5, 2026 sale executed under the disclosed Rule 10b5-1 trading plan.

What was the stated purpose of Marshall Tyson Eliot’s ATEC share sale?
The company states the sale was conducted to satisfy tax withholding obligations for Marshall Tyson Eliot. These obligations arose from the vesting of restricted stock units, and the transaction was carried out pursuant to his pre-established Rule 10b5-1 trading plan adopted March 14, 2025.
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).
X
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*
Marshall Tyson Eliot
(Last)(First)(Middle)
C/O ALPHATEC SPINE, INC.
1950 CAMINO VIDA ROBLE
(Street)
CARLSBAD CALIFORNIA 92008
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
Alphatec Holdings, Inc. [ ATEC ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
GENERAL COUNSEL & CORP. SEC.
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/05/2026		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 Stock08/05/2026S(1)8,168D$9.65(2)630,398D
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 sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 14, 2025 to satisfy certain tax withholding obligations of the reporting person resulting from the vesting of restricted stock units.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.41 to $10.01, inclusive. 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 sold at each separate price within the ranges set forth in this footnote.
/s/ Tyson E. Marshall08/07/2026
** 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)

Source: View Original Filing on SEC EDGAR